Updated this guide to give git/github instructions instead of svn/googlecode instructions.
Updated this guide to give git/github instructions instead of svn/googlecode instructions.

opotowsky/cyclus.github.com,rwcarlsen/cyclus.github.com,opotowsky/cyclus.github.com,rwcarlsen/cyclus.github.com,gidden/cyclus.github.com,gidden/cyclus.github.com,opotowsky/cyclus.github.com,rwcarlsen/cyclus.github.com,gidden/cyclus.github.com