Merge pull request #4 from pexea12/add-sourcemap

feat (webpack): add sourcemap

Author: pexea12

build/webpack.prod.conf.js

@@ -28,6 +28,8 @@ config.plugins = (config.plugins || []).concat([
   }),
 
   new UglifyJSPlugin({
+    sourceMap: true,
+    
     compress: {
       warnings: false,
       drop_debugger: true,
@@ -51,4 +53,4 @@ config.plugins = (config.plugins || []).concat([
   new webpack.optimize.OccurrenceOrderPlugin(),
 ])
 
-module.exports = config
+module.exports = config