entrust in laravel 5.1 setup config/app.php

How add code in config/app.php file in provide array

'Zizaco\Entrust\EntrustServiceProvider' and in aliases array 'Entrust' => 'Zizaco\Entrust\EntrustFacade'.

I have this arrays

'providers' => [

Illuminate\Foundation\Providers\ArtisanServiceProvider::class,

'aliases' => [

    'App'       => Illuminate\Support\Facades\App::class,

via Chebli Mohamed