Merge pull request #1 from KumarRobotics/feature/add-setup-guide

Started adding documentation on catkin and c++11
Merge pull request #2 from KumarRobotics/feature/add-setup-guide

Added theme fix for readthedocs.org
Removed offending theme command
update index
Modified environment setup
Merge branch 'master' of github.com:KumarRobotics/kr_docs into feature/add-setup-guide