Added the ability to tweak the ContainerView & added shadow to the simple slideout

Conflicts:
	MonoTouch.SlideoutNavigation/SimpleSlideoutNavigationController.cs
	MonoTouch.SlideoutNavigation/SlideoutNavigationController.cs
More improvements
Merge branch 'v2' of https://github.com/thedillonb/MonoTouch.SlideoutNavigation into v2

Conflicts:
	MonoTouch.SlideoutNavigation/SimpleSlideoutNavigationController.cs
	MonoTouch.SlideoutNavigation/SlideoutNavigationController.cs