Cleaning up for 3rd ed
Added view and view controller
Initial implementation of View controller and view
Added TimeViewController
Added SPTimeViewController.xib
Switched to time view controller for root view
Added tab bar controller
Added title to tab controller bars
Organization
Override viewDidLoad
Changed UILabel to weak reference
Removed deprecated method
viewWillAppear and other implementations
Cleanup for 3rd ed
Logging for rotation notifications
stuff