title: Laravel Sentinel Class Sentinel\Middleware\SentryAuth does not exist
body: <p>I have installed Sentinel package to my laravel web application.
  Sentinel user login and activation is working good.
  The issue is that i have added the miiddle ware to the route as follow</p>
  
  <pre><code>Route::group(['middleware' =&gt; ['track', 'sentry.auth']], function () { 
      Route::Controller('state', 'StateController');
  });
  </code></pre>
  
  <p>but i got that error</p>
  
  <pre><code>**Class Sentinel\Middleware\SentryAuth does not exist**
  </code></pre>
  
  <p>I checked the kernel.php and i found the middleware is already exists</p>
  
  <pre><code> 'sentry.auth' =&gt; \Sentinel\Middleware\SentryAuth::class,
   'sentry.admin' =&gt; \Sentinel\Middleware\SentryAdminAccess::class,
   'sentry.member' =&gt; \Sentinel\Middleware\SentryMember::class,
   'sentry.guest' =&gt; \Sentinel\Middleware\SentryGuest::class,
  </code></pre>