TodoList - Template TableViewController & TableViewCell

- Submitting auto-generated subclasses of UITableViewController and
UITableViewCell
TodoList - First attempt at implementing functionality

- Coding to the supplied image ToDoApp.jpg
TodoList - Setting cell background color more easily

- Eliminating verbose if statement and hardcoded color values by
instead using our array of pre-defined colors.
TodoList - Cell white text on floating oval color

- Renaming cell label from todoItem to nameLabel
- Instead of having a cell (rectangular) with a solid color, we want it
to look like a floating color oval with white text. The background will
still be white.
TodoList - Getting rid of Status Bar

- Updated project settings to check the status bar style option ‘hide
during application launch’
- Added prefersStatusBarHidden method to return YES
TodoList - No functional change.

- Changed global variable nameLabel to a property.