Merge pull request #59 from boryn/fire-method-fix

Change not supported fire() to dispatch()

src/PushoverChannel.php

@@ -55,7 +55,7 @@ public function send($notifiable, Notification $notification)
 
  protected function fireFailedEvent($notifiable, $notification, $message)
  {
- $this->events->fire(
+ $this->events->dispatch(
  new NotificationFailed($notifiable, $notification, 'pushover', [$message])
  );
  }