shared element fix

lib/ios/RNNNavigationStackManager.m

 	self.fromVC = vc;
 	
 	
-	if (self.toVC.options.animations.push) {
+	if (self.toVC.options.animations.push || self.toVC.isCustomTransitioned) {
 		vc.navigationController.delegate = newTop;
 	} else {
 		vc.navigationController.delegate = nil;

playground/src/screens/CustomTransitionDestination.js

           text: 'ye babyyyyyy',
           fontFamily: 'HelveticaNeue-Italic'
         },
-        largeTitle: true
+        largeTitle: false
       }
     };
   }