I am starting development on an iOS app for iPad, and I am looking to build the app with a similar design to the current Facebook or Twitter iPad apps. The functionality that I am looking for, specifically, is the ability to have a menu on the left side that can be shown or hidden with a swipe, and content on the right side that layers over the menu. I have looked at doing this app with a split-view controller, but I see no way of layering content like in these other apps. I'm not even sure what to call this style of app, so any help or guidance is greatly appreciated.
Examples of layered content:
Facebook:
Twitter:
Although I can't pull the image from it, this link has a good image of the layered content panes in the Twitter iPad app.