Warining issued by loader-utils

When run build **loader-utils** issued this deprecation message:
```
loader option has been deprecated - replace with "use"
(node:22316) DeprecationWarning: loaderUtils.parseQuery() received a non-string
value which can be problematic
```
So based on **loader-utils** (See: webpack/loader-utils#56)  and **babel-loader** (See: https://github.com/babel/babel-loader#options) documentation.  **options** have been removed as object and used query string instead.

webpack2/webpack.config.js

@@ -17,10 +17,7 @@ const webpackCommon = {
  exclude: /node_modules/,
  use: [
  {
- loader: 'babel-loader',
- options: {
- presets: ['es2015']
- }
+ loader: 'babel-loader?presets[]=es2015'
  }
  ]
  },