Add a note to the AppServiceProvider.

app/Providers/AppServiceProvider.php

@@ -21,6 +21,10 @@ class AppServiceProvider extends ServiceProvider {
 	 */
 	public function register()
 	{
+		// This service provider is a great spot to register your various container
+		// bindings with the application. As you can see, we are registering our
+		// "Registrar" implementation here. You can add your own bindings too!
+
 		$this->app->bind(
 			'Illuminate\Contracts\Auth\Registrar',
 			'App\Services\Registrar'