https://github.com/EpicGames/UnrealEngine/pull/2014

Submitted a pull request to add MFI support to engine!!
Since radu.danciu added controller support for iOS, I was really waiting for MFI controller support.
However nobody had success on MFI controler as several other post states.

So I started with great wiki page. And finally made working code.
I really wanted to share this functionary with community.
Please tell me if I need additional work.