added detection for iceweasel, detecting it as firefox, no extra flags added

src/bowser.js

@@ -27,7 +27,7 @@
       , safari = /safari/i.test(ua) && !chrome && !phantom && !silk
       , android = /android/i.test(ua)
       , opera = /opera/i.test(ua) || /opr/i.test(ua)
-      , firefox = /firefox/i.test(ua)
+      , firefox = /(firefox|iceweasel)/i.test(ua)
       , gecko = /gecko\//i.test(ua)
       , seamonkey = /seamonkey\//i.test(ua)
       , webos = /(?:web|hpw)os/i.test(ua)
@@ -37,7 +37,7 @@
       , rimtablet = /rim\stablet/i.test(ua)
       , bada = /bada\//i.test(ua)
       , webkitVersion = /version\/(\d+(\.\d+)?)/i
-      , firefoxVersion = /firefox[ \/](\d+(\.\d+)?)/i
+      , firefoxVersion = /(?:firefox|iceweasel)[ \/](\d+(\.\d+)?)/i
       , mobile = /mobi/i.test(ua)
       , tablet = /tablet/i.test(ua)
       , o = {}

src/useragents.js

@@ -425,6 +425,20 @@ module.exports.useragents = {
       , version: '21.0'
       , a: true
       }
+    , 'Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20121202 Firefox/17.0 Iceweasel/17.0.1': {
+        mozilla: true
+      , gecko: true
+      , firefox: true
+      , version: '17.0'
+      , a: true
+      }
+    , 'Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120724 Debian Iceweasel/15.0': {
+        mozilla: true
+      , gecko: true
+      , firefox: true
+      , version: '15.0'
+      , a: true
+      }
     , 'Mozilla/5.0 (Windows NT 6.2; WOW64; rv:15.0) Gecko/20120910144328 Firefox/15.0.2': {
         mozilla: true
       , gecko: true