Merge pull request #2 from ipa320/hydro_dev

Hydro dev upstream
added missing install tag
Merge branch 'hydro_dev' of github.com:abubeck/cob_environments into hydro_dev
catkin_lint cleanup
Merge pull request #54 from abubeck/hydro_dev

Cleanups for hydro release
Merge branch 'hydro_dev' into hydro_release_candidate