Simplififed 'Learn More' contents and added Pull request plug.
Simplififed 'Learn More' contents and added Pull request plug.

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