Swipeableview spike

A simple view that will slide its children in.

**TODO** add touch events to drag the child in/out

![device-2014-06-29-135147 online-video-cutter com](https://cloud.githubusercontent.com/assets/1848238/3423295/a2cb1cbc-ff8d-11e3-8280-d3b0069e1125.gif)

oh yeah I'm just used to seeing major minor incremental, would "20.0.0" work?