Step 1: Add a new ViewController as rootVC

- Create a new root view controller (you don't need an XIB file)
- Add the view controller in nav controller to the rootViewController of the window

Signed-off-by: Taylor Mott <trm36@humboldt.edu>
STEP 2&3: AppSettings Singleton, (Un)Register Noti

Step 2: Create an AppSettings singleton

- Create an object AppSettings as an NSObject subclass

Step 3: Register and Unregister your AppSettings for notificaitons

- Create a registerForNotifications method
- Create an unregisterForNotifications method
- In the sharedInstance method call registerForNotifications
- In the dealloc method call unregisterForNotifications
- Add a method respondToViewAppeared
- Log that the view appeared.

Signed-off-by: Taylor Mott <trm36@humboldt.edu>