Now renderFrame in tangram.cpp calls applyGesture. (refer tangram.cpp)
Removed usage of clearGesture!, each gesture is responsible to clear itself on its application! (refer tangram.cpp)
Moved apply and clear gestures out of viewController update method (viewController.mm).

These changes were done in order to be compatible with android behavior. (GLSurfaceView.Renderer does not have an update
call, its "onDrawFrame" call handles the update frame!.