Add python script to bridge hydro type to groovy message type
Merge remote-tracking branch 'origin/master' into hydro-launch-groovy-compatible

Conflicts:
	jsk_pr2_startup/jsk_pr2_sensors/hydro_recognition.launch
Merge pull request #74 from garaemon/hydro-launch-groovy-compatible

Add python script to bridge hydro type to groovy message type about face detection