title: AppDelegate not responding to NSNotification
body: <p>I would like to use my app's AppDelegate to post a CRToast notification</p>
  
  <p>Here's how I'm adding the observer. </p>
  
  <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {
  [[NSNotificationCenter defaultCenter] addObserver:self
                                               selector:@selector(noConnectionNotification)
                                                   name:@"No_Connection_Available" object:nil];
  
  }
  </code></pre>
  
  <p>and here's the method it's supposed to call</p>
  
  <pre><code>-(void)noConnectionNotification{
       NSLog(@"received notification");
      NSString *notificationString = @"Unable to reach server. Changes will be cached.";
      NSDictionary *options = @{kCRToastTextKey : notificationString,
                                kCRToastNotificationTypeKey : @(CRToastTypeStatusBar),
                                kCRToastTextAlignmentKey : @(NSTextAlignmentCenter),
                                kCRToastBackgroundColorKey : [UIColor redColor],
                                kCRToastAnimationInDirectionKey : @(CRToastAnimationDirectionTop),
                                kCRToastAnimationOutDirectionKey : @(CRToastAnimationDirectionTop),
                                kCRToastTimeIntervalKey : @(2),
                                };
      [CRToastManager showNotificationWithOptions:options
                                  completionBlock:nil];
  }
  </code></pre>
  
  <p>and how I'm posting the notification from a different class:</p>
  
  <pre><code> dispatch_async(dispatch_get_main_queue(), ^{
         [[NSNotificationCenter defaultCenter] postNotificationName:@"No_Connection_Available" object:nil];
          });
      }
  </code></pre>
  
  <p>The method doesn't get called. If I make one of my various view controllers an observer, that one gets the notification, but the AppDelegate isn't. Is it just not possible to make the AppDelegate a NSNotification observer?</p>