Initial reaveal / hide animations
HamburgerMenuController working
Made menu button work from NavigationBar
isMenuRevealed made readonly
Refactored TweetTableView.  Added mentions view.
Renamed HomeVC to TimelineVC.  Fixed bugs.
All required features.  No polish.
Fixed some bugs.  Back button now appears properly
Some UI tweaks
Minor visual tweaks.
Disable interaction with VC when menu is expanded