diff --git a/.travis.yml b/.travis.yml
index 5d6cae7..2c9610d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
 language: node_js
+after_success: npm run coverage
 node_js:
   - "8.4.0"
diff --git a/package-lock.json b/package-lock.json
index c5f1373..881f9ea 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1030,6 +1030,15 @@
         "readable-stream": "2.3.3"
       }
     },
+    "argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "1.0.3"
+      }
+    },
     "arr-diff": {
       "version": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
       "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
@@ -1078,6 +1087,19 @@
     "arrify": {
       "version": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
       "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
+      "dev": true,
+      "optional": true
+    },
+    "asn1": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
+      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=",
+      "dev": true
+    },
+    "assert-plus": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
     "async": {
@@ -1092,6 +1114,12 @@
       "dev": true,
       "optional": true
     },
+    "asynckit": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
+      "dev": true
+    },
     "auto-bind": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/auto-bind/-/auto-bind-1.2.1.tgz",
@@ -2543,6 +2571,18 @@
         }
       }
     },
+    "aws-sign2": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
+      "dev": true
+    },
+    "aws4": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.7.0.tgz",
+      "integrity": "sha512-32NDda82rhwD9/JBCCkB+MRYDp0oSvlo2IL6rQWA10PQi7tDUM3eqMSltXmY+Oyl/7N3P3qNtAlv7X0d9bI28w==",
+      "dev": true
+    },
     "babel-cli": {
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-cli/-/babel-cli-6.26.0.tgz",
@@ -6177,6 +6217,16 @@
       "integrity": "sha1-As4P3u4M709ACA4ec+g08LG/zj8=",
       "dev": true
     },
+    "bcrypt-pbkdf": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "tweetnacl": "0.14.5"
+      }
+    },
     "better-assert": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/better-assert/-/better-assert-1.0.2.tgz",
@@ -6520,6 +6570,12 @@
       "integrity": "sha1-Sm+gc5nCa7pH8LJJa00PtAjFVQ0=",
       "dev": true
     },
+    "caseless": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
+      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
+      "dev": true
+    },
     "chalk": {
       "version": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
       "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
@@ -6689,6 +6745,15 @@
         "convert-to-spaces": "1.0.2"
       }
     },
+    "combined-stream": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+      "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
+      "dev": true,
+      "requires": {
+        "delayed-stream": "1.0.0"
+      }
+    },
     "commander": {
       "version": "2.12.2",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.12.2.tgz",
@@ -6886,6 +6951,28 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
+    "coveralls": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/coveralls/-/coveralls-3.0.2.tgz",
+      "integrity": "sha512-Tv0LKe/MkBOilH2v7WBiTBdudg2ChfGbdXafc/s330djpF3zKOmuehTeRwjXWc7pzfj9FrDUTA7tEx6Div8NFw==",
+      "dev": true,
+      "requires": {
+        "growl": "1.10.5",
+        "js-yaml": "3.12.0",
+        "lcov-parse": "0.0.10",
+        "log-driver": "1.2.7",
+        "minimist": "1.2.0",
+        "request": "2.87.0"
+      },
+      "dependencies": {
+        "minimist": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
+          "dev": true
+        }
+      }
+    },
     "create-error-class": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/create-error-class/-/create-error-class-3.0.2.tgz",
@@ -6910,6 +6997,15 @@
         "array-find-index": "1.0.2"
       }
     },
+    "dashdash": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
+      "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "1.0.0"
+      }
+    },
     "date-time": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/date-time/-/date-time-0.1.1.tgz",
@@ -7060,6 +7156,12 @@
         }
       }
     },
+    "delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
+      "dev": true
+    },
     "delegates": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
@@ -7124,6 +7226,16 @@
       "integrity": "sha1-7gHdHKwO08vH/b6jfcCo8c4ALOI=",
       "dev": true
     },
+    "ecc-jsbn": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz",
+      "integrity": "sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "jsbn": "0.1.1"
+      }
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -8094,6 +8206,12 @@
         "acorn-jsx": "3.0.1"
       }
     },
+    "esprima": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.0.tgz",
+      "integrity": "sha512-oftTcaMu/EGrEIu904mWteKIv8vMuOgGYo7EhVJJN00R/EED9DCua/xxHRdYnKtcECzVg7xOWhflvJMnqcFZjw==",
+      "dev": true
+    },
     "esquery": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/esquery/-/esquery-1.0.1.tgz",
@@ -8300,6 +8418,12 @@
         }
       }
     },
+    "extend": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.1.tgz",
+      "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
+      "dev": true
+    },
     "external-editor": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/external-editor/-/external-editor-2.2.0.tgz",
@@ -8320,6 +8444,12 @@
         "is-extglob": "https://registry.npmjs.org/is-extglob/-/is-extglob-1.0.0.tgz"
       }
     },
+    "extsprintf": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
+      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
+      "dev": true
+    },
     "fast-deep-equal": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
@@ -8571,6 +8701,23 @@
         "for-in": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz"
       }
     },
+    "forever-agent": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/forever-agent/-/forever-agent-0.6.1.tgz",
+      "integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=",
+      "dev": true
+    },
+    "form-data": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.2.tgz",
+      "integrity": "sha1-SXBJi+YEwgwAXU9cI67NIda0kJk=",
+      "dev": true,
+      "requires": {
+        "asynckit": "0.4.0",
+        "combined-stream": "1.0.6",
+        "mime-types": "2.1.18"
+      }
+    },
     "formatio": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/formatio/-/formatio-1.2.0.tgz",
@@ -9670,6 +9817,15 @@
       "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
       "dev": true
     },
+    "getpass": {
+      "version": "0.1.7",
+      "resolved": "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz",
+      "integrity": "sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "1.0.0"
+      }
+    },
     "glob": {
       "version": "7.1.2",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
@@ -9798,12 +9954,34 @@
       "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg=",
       "dev": true
     },
+    "growl": {
+      "version": "1.10.5",
+      "resolved": "https://registry.npmjs.org/growl/-/growl-1.10.5.tgz",
+      "integrity": "sha512-qBr4OuELkhPenW6goKVXiv47US3clb3/IbuWF9KNKEijAy9oeHxU9IgzjvJhHkUzhaj7rOUD7+YGWqUjLp5oSA==",
+      "dev": true
+    },
     "growly": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/growly/-/growly-1.3.0.tgz",
       "integrity": "sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=",
       "dev": true
     },
+    "har-schema": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz",
+      "integrity": "sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=",
+      "dev": true
+    },
+    "har-validator": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.0.3.tgz",
+      "integrity": "sha1-ukAsJmGU8VlW7xXg/PJCmT9qff0=",
+      "dev": true,
+      "requires": {
+        "ajv": "5.5.2",
+        "har-schema": "2.0.0"
+      }
+    },
     "has": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
@@ -9901,6 +10079,17 @@
         "requires-port": "1.0.0"
       }
     },
+    "http-signature": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz",
+      "integrity": "sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "1.0.0",
+        "jsprim": "1.4.1",
+        "sshpk": "1.14.2"
+      }
+    },
     "hullabaloo-config-manager": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/hullabaloo-config-manager/-/hullabaloo-config-manager-1.1.1.tgz",
@@ -10476,6 +10665,12 @@
         "core-util-is": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz"
       }
     },
+    "is-typedarray": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
+      "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=",
+      "dev": true
+    },
     "is-url": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/is-url/-/is-url-1.2.4.tgz",
@@ -10511,6 +10706,12 @@
         }
       }
     },
+    "isstream": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
+      "integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=",
+      "dev": true
+    },
     "istanbul-lib-coverage": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.0.tgz",
@@ -10551,12 +10752,35 @@
       "integrity": "sha1-COnxMkhKLEWjCQfp3E1VZ7fxFNc=",
       "dev": true
     },
+    "js-yaml": {
+      "version": "3.12.0",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.0.tgz",
+      "integrity": "sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==",
+      "dev": true,
+      "requires": {
+        "argparse": "1.0.10",
+        "esprima": "4.0.0"
+      }
+    },
+    "jsbn": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
+      "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM=",
+      "dev": true,
+      "optional": true
+    },
     "json-parse-better-errors": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
       "integrity": "sha512-mrqyZKfX5EhL7hvqcV6WG1yYjnjeuYDzDhhcAAUrq8Po85NBQBJP+ZDUT75qZQ98IkUoBqdkExkukOU7Ts2wrw==",
       "dev": true
     },
+    "json-schema": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
+      "integrity": "sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=",
+      "dev": true
+    },
     "json-schema-traverse": {
       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz",
@@ -10569,6 +10793,12 @@
       "integrity": "sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=",
       "dev": true
     },
+    "json-stringify-safe": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz",
+      "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
+      "dev": true
+    },
     "json3": {
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/json3/-/json3-3.3.2.tgz",
@@ -10580,6 +10810,18 @@
       "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
       "dev": true
     },
+    "jsprim": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
+      "integrity": "sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "1.0.0",
+        "extsprintf": "1.3.0",
+        "json-schema": "0.2.3",
+        "verror": "1.10.0"
+      }
+    },
     "kind-of": {
       "version": "https://registry.npmjs.org/kind-of/-/kind-of-3.1.0.tgz",
       "integrity": "sha1-R11pil5J/15T0U4+cyQp3Iv0z0c=",
@@ -10606,6 +10848,12 @@
         "package-json": "4.0.1"
       }
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+    "lcov-parse": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/lcov-parse/-/lcov-parse-0.0.10.tgz",
+      "integrity": "sha1-GwuP+ayceIklBYK3C3ExXZ2m2aM=",
+      "dev": true
+    },
     "levn": {
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       "resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
@@ -10716,6 +10964,12 @@
       "integrity": "sha1-2ZwHpmnp5tJOE2Lf4mbGdhavEwI=",
       "dev": true
     },
+    "log-driver": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/log-driver/-/log-driver-1.2.7.tgz",
+      "integrity": "sha512-U7KCmLdqsGHBLeWqYlFA0V0Sl6P08EE1ZrmA9cxjUE0WVqT9qnyVDPz1kzpFEP0jdJuFnasWIfSd7fsaNXkpbg==",
+      "dev": true
+    },
     "lolex": {
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       "resolved": "https://registry.npmjs.org/lolex/-/lolex-1.6.0.tgz",
@@ -13314,6 +13568,12 @@
         }
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     },
+    "oauth-sign": {
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.8.2.tgz",
+      "integrity": "sha1-Rqarfwrq2N6unsBWV4C31O/rnUM=",
+      "dev": true
+    },
     "object-assign": {
       "version": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
       "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
@@ -13556,6 +13816,12 @@
         "isarray": "0.0.1"
       }
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+    "performance-now": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
+      "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=",
+      "dev": true
+    },
     "pinkie": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/pinkie/-/pinkie-1.0.0.tgz",
@@ -13811,6 +14077,12 @@
         "ipaddr.js": "1.6.0"
       }
     },
+    "punycode": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
+      "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4=",
+      "dev": true
+    },
     "qs": {
       "version": "6.5.1",
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.1.tgz",
@@ -14181,6 +14453,34 @@
         "is-finite": "https://registry.npmjs.org/is-finite/-/is-finite-1.0.2.tgz"
       }
     },
+    "request": {
+      "version": "2.87.0",
+      "resolved": "https://registry.npmjs.org/request/-/request-2.87.0.tgz",
+      "integrity": "sha512-fcogkm7Az5bsS6Sl0sibkbhcKsnyon/jV1kF3ajGmF0c8HrttdKTPRT9hieOaQHA5HEq6r8OyWOo/o781C1tNw==",
+      "dev": true,
+      "requires": {
+        "aws-sign2": "0.7.0",
+        "aws4": "1.7.0",
+        "caseless": "0.12.0",
+        "combined-stream": "1.0.6",
+        "extend": "3.0.1",
+        "forever-agent": "0.6.1",
+        "form-data": "2.3.2",
+        "har-validator": "5.0.3",
+        "http-signature": "1.2.0",
+        "is-typedarray": "1.0.0",
+        "isstream": "0.1.2",
+        "json-stringify-safe": "5.0.1",
+        "mime-types": "2.1.18",
+        "oauth-sign": "0.8.2",
+        "performance-now": "2.1.0",
+        "qs": "6.5.1",
+        "safe-buffer": "5.1.2",
+        "tough-cookie": "2.3.4",
+        "tunnel-agent": "0.6.0",
+        "uuid": "3.3.2"
+      }
+    },
     "require-precompiled": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/require-precompiled/-/require-precompiled-0.1.0.tgz",
@@ -14598,6 +14898,29 @@
       "integrity": "sha512-4K1NsmrlCU1JJgUrtgEeTVyfx8VaYea9J9LvARxhbHtVtohPs/gFGG5yy49beySjlIMhhXZ4QqujIZEfS4l6Cg==",
       "dev": true
     },
+    "sprintf-js": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
+      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+      "dev": true
+    },
+    "sshpk": {
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.14.2.tgz",
+      "integrity": "sha1-xvxhZIo9nE52T9P8306hBeSSupg=",
+      "dev": true,
+      "requires": {
+        "asn1": "0.2.3",
+        "assert-plus": "1.0.0",
+        "bcrypt-pbkdf": "1.0.2",
+        "dashdash": "1.14.1",
+        "ecc-jsbn": "0.1.1",
+        "getpass": "0.1.7",
+        "jsbn": "0.1.1",
+        "safer-buffer": "2.1.2",
+        "tweetnacl": "0.14.5"
+      }
+    },
     "stack-utils": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-1.0.1.tgz",
@@ -15091,6 +15414,15 @@
       "integrity": "sha1-8/XAw7pymafvmUJ+RGMyV63kMyA=",
       "dev": true
     },
+    "tough-cookie": {
+      "version": "2.3.4",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",
+      "integrity": "sha512-TZ6TTfI5NtZnuyy/Kecv+CnoROnyXn2DN97LontgQpCwsX2XyLYCC0ENhYkehSOwAp8rTQKc/NUIF7BkQ5rKLA==",
+      "dev": true,
+      "requires": {
+        "punycode": "1.4.1"
+      }
+    },
     "trim-newlines": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-1.0.0.tgz",
@@ -15108,6 +15440,22 @@
       "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=",
       "dev": true
     },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "5.1.2"
+      }
+    },
+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
+      "dev": true,
+      "optional": true
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -15293,6 +15641,12 @@
       "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=",
       "dev": true
     },
+    "uuid": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==",
+      "dev": true
+    },
     "v8flags": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-2.1.1.tgz",
@@ -15308,6 +15662,17 @@
       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=",
       "dev": true
     },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "dev": true,
+      "requires": {
+        "assert-plus": "1.0.0",
+        "core-util-is": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+        "extsprintf": "1.3.0"
+      }
+    },
     "well-known-symbols": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/well-known-symbols/-/well-known-symbols-1.0.0.tgz",
diff --git a/package.json b/package.json
index d996853..59c02fb 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,7 @@
     "babel-cli": "^6.26.0",
     "babel-preset-env": "^1.7.0",
     "babel-register": "^6.26.0",
+    "coveralls": "^3.0.2",
     "eslint": "^4.19.1",
     "eslint-config-airbnb-base": "^12.1.0",
     "eslint-plugin-ava": "^4.5.1",
@@ -53,9 +54,10 @@
     "test": "test"
   },
   "scripts": {
-    "lint": "./node_modules/.bin/eslint ./src --fix",
+    "lint": "eslint ./src --fix",
     "testem": "testem",
-    "test": "./node_modules/.bin/ava"
+    "test": "nyc --reporter=html --reporter=text ava",
+    "coverage": "nyc report --reporter=text-lcov | coveralls"
   },
   "license": "MIT"
 }
diff --git a/src/bowser.js b/src/bowser.js
index b0fbc99..6ecbcb2 100644
--- a/src/bowser.js
+++ b/src/bowser.js
@@ -40,11 +40,11 @@ class Bowser {
    * @param {Object} range
    * @returns {Boolean}
    */
-  static inRange(range) {
-    if (!range) {
-      throw new Error('Range can not be empty');
-    }
-  }
+  // static inRange(range) {
+  //   if (!range) {
+  //     throw new Error('Range can not be empty');
+  //   }
+  // }
 
   /**
    * Check if the browser is NOT in range or not