title-cases fixes

See github.com while logged out.

Some additional line that more generally says "the project lives on GitHub" with a link to either the organization page, or habari/habari specifically may be a nice addition as well, as only one of three actionable links (Issue Tracker, Fork Repository, Send Pull Requests) actually links to the repository on GitHub.
Merge pull request #28 from VxJasonxV/patch-1

title-case fixes, thanks VxJasonxV