Add simple webpack builder into the project

package.json

@@ -29,6 +29,9 @@
   "devDependencies": {
     "ava": "^0.25.0",
     "babel-cli": "^6.26.0",
+    "babel-core": "^6.26.3",
+    "babel-loader": "^7.1.5",
+    "babel-plugin-add-module-exports": "^0.3.1",
     "babel-plugin-istanbul": "^4.1.6",
     "babel-preset-env": "^1.7.0",
     "babel-register": "^6.26.0",
@@ -42,6 +45,8 @@
     "nyc": "^12.0.2",
     "sinon": "^2.4.1",
     "testem": "^1.18.5",
+    "webpack": "^4.15.1",
+    "webpack-cli": "^3.0.8",
     "yamljs": "^0.3.0"
   },
   "ava": {
@@ -63,8 +68,5 @@
     "coverage": "nyc report --reporter=text-lcov | coveralls",
     "docs": "jsdoc -c jsdoc.json"
   },
-  "license": "MIT",
-  "dependencies": {
-    "semver": "^5.5.0"
-  }
+  "license": "MIT"
 }