Enabled hot reload for webpack

.babelrc

 {
   "presets": [
     ["latest", {"modules": false}]
+  ],
+  "plugins": [
+    "transform-runtime"
   ]
 }
\ No newline at end of file

package.json

@@ -5,7 +5,7 @@
   "author": "Sascha Herzinger",
   "private": true,
   "scripts": {
-    "build": "./node_modules/webpack/bin/webpack.js --config webpack.config.js --env build",
+    "build": "./node_modules/webpack/bin/webpack.js --config webpack.config.js --env production",
     "devbuild": "./node_modules/webpack/bin/webpack.js --config webpack.config.js",
     "test": "./node_modules/karma/bin/karma start karma.config.js"
   },
@@ -18,7 +18,7 @@
   "devDependencies": {
     "babel-core": "^7.0.0-alpha.3",
     "babel-preset-latest": "^7.0.0-alpha.3",
-    "babel-polyfill": "^7.0.0-alpha.3",
+    "babel-plugin-transform-runtime": "^7.0.0-alpha.9",
 
     "webpack": "^2.3.3",
     "webpack-dev-server": "^2.4.2",

webpack.config.js

@@ -9,8 +9,9 @@ let plugins = [
 let filename = ''
 const library = 'fractal'
 
-if (env === 'build') {
+if (env === 'production') {
   plugins.push(new webpack.optimize.UglifyJsPlugin({minimize: true}))
+  plugins.push(new webpack.DefinePlugin({'process.env': {'NODE_ENV': JSON.stringify('production')}}))
   filename = library + '.min.js'
 } else {
   filename = library + '.js'
@@ -18,7 +19,6 @@ if (env === 'build') {
 
 module.exports = {
   entry: [
-    'babel-polyfill',
     path.resolve(__dirname, 'src/main.js')
   ],
   devtool: '#inline-source-map',