Fix #8 - Add preference for auto-start GPS on startup.
Fix whitespace.
Fix #15 - TTFF value is wrong when GPS is automatically started on
startup
Add progress bar that animates from when GPS starts to when first fix is
acheived.
Fix #16 - Add preference to keep screen on during app execution.
Fix comment typo.
Fix #10 - Implement Action Bar controls for starting/stopping GPS,
sharing location.
Change progress bar so it stops churning when first satellite info is
shown, versus when first fix is acheived.
Fix #17 - Add ability to tab swipe on top of GridView on Status tab.
Fix #21 - Show a tutorial on first app installation
Remove unused imports.
Fix #18 - Add user setting for minTime and minDistance.
Update to #18 - only restart the GPS with the new interval or
minDistance if the GPS was previously active.  Otherwise, wait until the
user starts the GPS to use the new values.
Updated to #18 - only show Toast pop up to user with GPS minTime and
minDistance if the user has changed from the default parameters.
Add units to comment on minDistance parameter.
Update to Google Play Services SDK rev 9.
Update to Android Support Library rev 18.
Updated Proguard config for new Android support library.
Switch is displayed on ActionBar but not yet functional.
Fix #24 - fully working Switch widget on Action Bar to turn GPS on and
off.  Works on all API levels currently supported by app (Android 2.2
and higher).