Include Babel polyfill

gulpfile.js

@@ -41,7 +41,10 @@ if (development) {
 
 var webpackConfig = {
   devtool: webpackDevtool,
-  entry: './' + dirs.src + '/' + dirs.js + '/' + files.mainJs + '.js',
+  entry: [
+    'babel-polyfill',
+    './' + dirs.src + '/' + dirs.js + '/' + files.mainJs + '.js'
+  ],
   output: {
     filename: './' + dirs.dist + '/' + dirs.jsDist + '/' + files.mainJsDist + '.js'
   },

package.json

@@ -8,6 +8,7 @@
   },
   "dependencies": {
     "axios": "^0.7.0",
+    "babel-polyfill": "^6.9.1",
     "body-parser": "~1.12.0",
     "classnames": "^2.1.5",
     "compression": "^1.6.1",