Fixed babel loader

src/js/index.js

@@ -1,6 +1,4 @@
 /* @flow */
-
-
 import React from 'react';
 import { render } from 'react-dom';
 import store from './store';

webpack/config.dev.babel.js

@@ -28,7 +28,7 @@ module.exports = {
             {
                 test: /\.jsx?$/,
                 exclude: /node_modules/,
-                use: ['babel'],
+                use: ['babel-loader'],
             },
             {
                 test: /\.less$/,