Merge pull request #220 from robotics-in-concert/indigo

Install rule for environment scripts in rocon_app_utilities.
Merge pull request #221 from robotics-in-concert/indigo

Disabling required on chirp
Merge branch 'indigo' into hydro-devel
fixed typo

missing end parenthesis
Merge pull request #227 from piyushk/patch-1

fixed typo
0.7.0
Merge branch 'indigo' into hydro-devel