Merge pull request #41 from 130s/groovy-devel

Add more unittesting. Separate tests for hand since the type of testing for hands I'll write this time will be not necessarily general enough.
More unit test cases
(base_toolchanger_hands.py) Add both hands operation that was missing.
Fixed handlight not function (wrong comparison of bool and str)

(handlight_command.py) Removed debug print
(test_hironx_derivedmethods_rostest.py) Tentative fix to enable to connect to real robot. Needs improvement later to port out embedded robot's info.
(base_hands.py) Adjust to the DIO assignment change.
(gripper_command.py) add comment and todo
(toolchanger_command.py) Fix to issue #9 (https://github.com/tork-a/rtmros_nextage/issues/9)