Merge branch 'master' into develop

Author: rmariuzzo

README.md

@@ -127,6 +127,24 @@ elixir(function(mix) {
 });
 ```
 
+#### Using [Laravel's Mix](https://laravel.com/docs/5.4/mix) with Laravel 5.4+ (optional)
+
+Add "[webpack-shell-plugin](https://www.npmjs.com/package/webpack-shell-plugin)" to package.json's "devDependencies" section.
+
+Add the following to webpack.mix.js:
+
+```js
+const WebpackShellPlugin = require('webpack-shell-plugin');
+
+// Add shell command plugin configured to create JavaScript language file
+mix.webpackConfig({
+    plugins:
+    [
+        new WebpackShellPlugin({onBuildStart:['php artisan lang:js --quiet'], onBuildEnd:[]})
+    ]
+});
+```
+
 ## Documentation
 
 This is a quick documentation regarding [Lang.js](https://github.com/rmariuzzo/lang.js) (the thin JavaScript library included by `Laravel-JS-Localization`). The [Lang.js](https://github.com/rmariuzzo/lang.js) (a thin library highly inspired on Laravel's [`Translator`](https://laravel.com/api/5.3/Illuminate/Translation/Translator.html) class).