Added the rough framework for the Google Map API and the code that is intended to keep the map centered on the user's GPS location.  That doesn't seem to be happening quite right yet, but most of the code is there...  I haven't yet integrated the SQLite database for the polyline data, and that should probably be the next step...  I can clean up the auto-follow of the map later.
Merge pull request #2 from agricocb/master

Merging the changes to pull in the Google Maps API and display the map on startup