Build an Interactive App lessons bookmark

Changing the theme in the App for real in the emulator (not just in the preview):
https://teamtreehouse.com/library/build-an-interactive-story-app/user-input/hiding-the-actionbar-with-an-app-theme

Making Our App Portrait-Only: (useful for login/sign up screen)
https://teamtreehouse.com/library/build-an-interactive-story-app/user-input/making-our-app-portraitonly