When the device has no WIFI or outdoors and not moving or stationary, update location if 20 meters movement is detected
Change toast form 'Receive First Fix' to 'Received First Fix'
Fix #12, update counter and location details when app resumes from background.
Fix #14 Fix Activity {com.twormobile.itrackmygps/com.twormobile.itrackmygps.MainActivity} did not call through to super.onDestroy()