Updating .gitignore to exclude unnecessary files
Ratings App - Initial Commit

- Chose Single View App as template
- Done as per online tutorial instructions
http://www.raywenderlich.com/50308/storyboards-tutorial-in-ios-7-part-1
- Disabled Auto Layout from the File inspector for the storyboard
- Set to a portrait-only app, by unchecking the Landscape Left and
Landscape Right options under Deployment Info, Device Orientation.