Reveal animation
Check a ‘behind the scenes’ view of this transition on:
www.highstreetapp.com/blog/open-sourcing-the-highstreet-watchkit-app
and for the assets go to:
https://github.com/GetHighstreet/WatchKitCore/tree/master/WatchKitAppCore/Core.xcassets/Animations/List%20Row%20Reveal