Add webpack for frontend dependency loading

webpack.config.js

@@ -0,0 +1,45 @@
+var path = require('path'),
+    fs = require('fs');
+
+// webpack.config.js
+module.exports = {
+  context: __dirname ,
+  entry: {
+    mailpoet: './assets/js/mailpoet',
+  },
+  output: {
+    path: './assets/js/src',
+    filename: '[name].js',
+  },
+  loaders: [
+    {
+      test: /\.js$/i,
+      loader: 'js'
+    },
+    {
+      test: /\.css$/i,
+      loader: 'css'
+    },
+    {
+      test: /\.jpe?g$|\.gif$|\.png$|\.svg$|\.woff$|\.ttf$|\.wav$|\.mp3$/i,
+      loader: 'file'
+    }
+  ],
+  resolve: {
+    modulesDirectories: [
+      'node_modules',
+      'assets/js',
+      'assets/css/lib'
+    ],
+    fallback: path.join(__dirname, 'node_modules'),
+    alias: {
+      'handlebars': 'handlebars/runtime.js'
+    }
+  },
+  resolveLoader: {
+    fallback: path.join(__dirname, 'node_modules'),
+    alias: {
+      'hbs': 'handlebars-loader'
+    }
+  }
+};