Changing Auth facade to app['auth']

Since Lumen defaults to no facades

Author: amosmos

app/Providers/AuthServiceProvider.php

@@ -3,7 +3,6 @@
 namespace App\Providers;
 
 use App\User;
-use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\Gate;
 use Illuminate\Support\ServiceProvider;
 
@@ -31,7 +30,7 @@ public function boot()
         // should return either a User instance or null. You're free to obtain
         // the User instance via an API token or any other method necessary.
 
-        Auth::viaRequest('api', function ($request) {
+        $this->app['auth']->viaRequest('api', function ($request) {
             if ($request->input('api_token')) {
                 return User::where('api_token', $request->input('api_token'))->first();
             }