Unit specification.
Using a handler to update UI.
Merge branch 'master' of https://github.com/fabriph/CERN-THE-Port-hackathon
Mock GPS.
Merge branch 'master' of https://github.com/fabriph/CERN-THE-Port-hackathon

Conflicts:
	data-collection/src/com/hackathon/casa/AltitudeTracker.java
	data-collection/src/com/hackathon/casa/MainActivity.java