Orientation Support

[MosheBerman]

Autorotation is generally supported by UIViews that are installed inside of the root UIViewController's view. However, because MBMenuController installs itself above the root view controller, problems arise.

I'm looking at ASDepthModal to see how @autresphere did it here: https://github.com/autresphere/ASDepthModal. Apparently, I have to "borrow" the status of being root view controller from the actual root, and return it when I'm done.

In the meanwhile, the class works with UINavigationControllers and UITabBarControllers in any orientation, and with UIViewControllers in portrait.