added topics to controller_nh (instead of root_nh), to be consistent with all the other controllers
Merge pull request #9 from efernandez/topics_inside_controller_nh

Add topics to controller node handle
diff_drive: add catkin includes to unit tests
fixes left/right wheel typo in a logging msg
Merge pull request #13 from efernandez/typo

Typo
Merge pull request #14 from po1/fix-diff-drive-test

diff_drive: add catkin includes to unit tests
Install default config files