Build some RDocs

[xtoddx]

rubydoc.info isn't pulling in class documentation, only the README. Fix it, even it it means bumping the tiny version on the gem just to publish it again.

[xtoddx]

On the other hand, the github version is already looking pretty nice. It will be a good way to tweak before pushing a release: http://www.rubydoc.info/github/xtoddx/maturate/master/