Fix view controller containment

[ankorko]

My proposed fix for #23. Besides using the View Controller Containment APIs, I have made the internal UIScrollview fullscreen, so that it extends behind the bar iOS 7 style.

[confile]

+1 hope this gets merged soon

[harkmall]

+1 please merge this

[rodericj]

Great change. This fixed a problem I was having when the SLPagingView's willDisappear was called. I'm going to look more into this one.

[dereck009]

+1

[jerrypainter]

+1 hope this fix the auto layout issue in child view controllers

[rodericj]

@jerrypainter, did it work for you?

[gmogames]

@ankorko I have not gone deep into this, but after your changes, setting the current page index does not work.

ViewDidLoad is called only when the pages actually load and the [setupPagingProcess] is not called and the self.scrollview is not set, so the [pageViewController setCurrentIndex:1 animated:NO]; does not work based on the examples given by the demos from @StefanLage

Might be worth checking out.

[ankorko]

@gmogames this PR is one year old. To be honest I will probably not look into it, all I can remember is that View Controller containment was not done properly. Feel free to propose a change if you figure it out!