Added Comments to rest of classes. 
Added a Broadcast Receiver (ConnectionDetectorReceiver.java) to check if
there is a change to the network connection. If there is not network
connection, the new class NoInternetConnectionActivity.java is called to
display the dialog box.
Added onPause and onResume to all classes so I can notify my
BroadcastReceiver when the application is displayed.
NetworkUtilities class is going to replace the old ConnectionDetector
class.