Class 'Illuminate\Html\FormFacade\Form' not found

I'm new using Laravel and I got some problem. I'll try some option and search from internet but still not work. Trying to include forms functionalities with FormFacade with Laravel 5 and I keep getting this error : Error 1/2 Error 2/2

I have added the following to config/app.php

Illuminate\View\ViewServiceProvider::class,
Illuminate\Html\HtmlServiceProvider::class,

and

'Form'=> Illuminate\Html\FormFacade\Form::class,
'Html'=> Illuminate\Html\HtmlFacade\Html::class, 

via Chebli Mohamed