Updated iOS7 Compatibility

[paulwalton]

Updated CGSize

[tciuro]

What does the patch solve? When I run the app, it still looks bad.

[paulwalton]

This simply fixes deprecation warnings, it should not affect the UI of the plugin. Sorry I did not really make my changes clear in the pull request.

[pdiegmann]

Any Updates incoming? The notification is still displayed behind the navigation-bar...

[alexcheng1982]

Refer to this Stackoverflow question, add following line to the -(void)viewDidLoad method to solve the issue that notifications display behind the navigation bar of iOS 7.

if ([self respondsToSelector:@selector(edgesForExtendedLayout)])
        self.edgesForExtendedLayout = UIRectEdgeNone;    

[skull-squadron]

The sample app still doesn't look right on iOS 7.