remove babel polyfill dependency

Author: llwt

bower.json

@@ -3,7 +3,7 @@
   "main": [
     "dist/angular-devtrw-translate.js"
     ],
-  "version": "0.1.3",
+  "version": "0.1.4",
   "description": "Provides translate-base and translate-child directives for angular-translate",
   "authors": [
     "Steven Nance <steven@devtrw.com>"