Some cleanup and more tests.

Signed-off-by: Régis Caspar <regis.caspar@gmail.com>
Merge remote-tracking branch 'github/master'

Signed-off-by: Régis Caspar <regis.caspar@gmail.com>

Conflicts:
	src/main/java/com/rcaspar/fitbitbat/checks/BatChecker.java