finally fixed the link, added advice about rationality.
finally fixed the link, added advice about rationality.

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