title: blade service injection not working Laravel 5.1
body: <p>I am trying to inject a controller into my view(blade.php) but it is being outputted as is 
  <code>@inject('problems', 'App\Http\Controllers\DonnerController')</code>
  this line is being printed on the screen, what's wrong here?
  My file name is <code>problems.blade.php</code></p>