Added Spinner for Login

Added an animated spinner for login prompt.
Downgrade to 3.1

Phone gap 3.4 not supported on build.phonegap, downgrading to 3.1.
Trying to get Android back button to work.

Added code to try and to get Android back button to work.
Added Map Screen

I added the map screen.
Destinations are now loaded and added to the map.
Added Popup Info for Destinations.

Bound popups to destinations.
Fixed error where map readjusts every time location is found.
Merge pull request #2 from alecdhuse/master

Added Map Screen