Fixed stooryboard warning.
Fixed stooryboard warning.

m1ksoftware/SlideMenuControllerSwift,ashikahmad/SlideMenuControllerSwift,dekatotoro/SlideMenuControllerSwift,ashikahmad/SlideMenuControllerSwift,Negativchik/SlideMenuControllerSwift,dekatotoro/SlideMenuControllerSwift,Negativchik/SlideMenuControllerSwift,m1ksoftware/SlideMenuControllerSwift