Merge branch 'release/0.0.1' into develop
Add code dealing with GPS status change.
NullPointerException fix.
Better LocationServiceFusionThread check before push.
Merge branch 'feature/location-status' into develop
Re-enable LEVEL_GPS_ENABLED message.
Add static method for checking whether GPS is enabled or not.
Start to change Sense to singleton pattern.
Minor change to Sense singleton.
Add new init and new method for checking whether a specific service has been enabled.
Merge branch 'feature/sense-singleton' into develop
Re-writing javadoc for Sense. Get application context.

Start to rewrite javadoc for Sense. Now Sense is holding the applicaiton
context instead of activity application passed to init.
Avoid exception when stop is called twice.
Terminating specific service if not specified by services.

In init functions for Sense, terminate specific service if not
specified by services argument.
Use LinkedList for storing listeners.

Now sensor services use LinkedList for storing listeners.
Add debug output for Sense.
Merge branch 'feature/sense-fix' into develop
LICENSE file formating and writing README.
Adding License to each source file.
Merge branch 'release/0.0.2'