Merge pull request #362 from DaneEveritt/patch-1

Queue confirmation emails.

@@ -2,12 +2,16 @@
 
 namespace BookStack\Notifications;
 
+use Illuminate\Bus\Queueable;
 use Illuminate\Notifications\Notification;
+use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Notifications\Messages\MailMessage;
 
-class ConfirmEmail extends Notification
+class ConfirmEmail extends Notification implements ShouldQueue
 {
 
+    use Queueable;
+    
     public $token;
 
     /**