Auto detect map to use based on GPS location

We should support robots that operate in different environments by detecting 
their location via GPS from the Android device and then loading the 
corresponding map (issue #44). While not perfect, the GPS location should be 
accurate enough to distinguish between Willow Garage, Google, and home for 
example. This makes moving the robot around and conducting demos more seamless.

As indoor location signals improve it may even help with picking the right map 
within the same large building by know the floor and general location.

Original issue reported on code.google.com by rhick...@google.com on 9 Sep 2011 at 7:32

Blocked on: #44

damonkohler / rosjava

Auto detect map to use based on GPS location #45