Updated plotting routine and plots for GRS / l030.
Continuing with the GRS - HCO+ velocity matching validation.
Merge branch 'master' of github.com:BGPS/distance_omnibus2
Merge pull request #3 from tbowers7/master

GRS - HCO+ velocity comparion tools and plots
Fiddled with README
Merge pull request #4 from low-sky/readme

Fiddled with README
moved readme.md -> readme.rst and updated python code
Merge branch 'master' of git://github.com/BGPS/distance_omnibus2

Conflicts:
	README.md
README updated with methods & figures