Fixed an iOS 8 version check

Testing if UIApplication responds to registerForRemoteNotifications is a really ugly way to check if we're running on iOS 8, when the code has nothing to do with remote notifications.

Just get the minimum dimension since a status bar will always be wider than it is tall.

Pod/Classes/TSMessage.m

@@ -198,14 +198,7 @@ - (void)fadeInCurrentNotification
         }
 
         CGSize statusBarSize = [UIApplication sharedApplication].statusBarFrame.size;
-
-        if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerForRemoteNotifications)]) {
-            verticalOffset += statusBarSize.height;
-        } else {
-            BOOL isPortrait = UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]);
-            CGFloat offset = isPortrait ? statusBarSize.height : statusBarSize.width;
-            verticalOffset += offset;
-        }
+        verticalOffset += MIN(statusBarSize.width, statusBarSize.height);
     };
 
     if ([currentView.viewController isKindOfClass:[UINavigationController class]] || [currentView.viewController.parentViewController isKindOfClass:[UINavigationController class]])