Documentation referencies links
Here the links about the geofencing module documentation:
1.https://github.com/JohnMurray/geofence-server-example 2.http://www.johnmurray.io/log/2012/07/11/Geofencing-Part-1.html 3.http://www.johnmurray.io/log/2012/09/10/Geofencing-Part-2.html 4.http://www.johnmurray.io/log/2012/09/10/Geofencing-Part-3.html