Fixed broken links: changed from github.com/hydra/hydra to github.com/projecthydra/hydra
Updating URL for gemspec to projecthydra.org
Updating version to RC2
Merge pull request #4 from afred/fix/master/docs

Fixed broken links in docs
Adding explicit declarations of bundle gems

Addressing: https://github.com/projecthydra/hydra/issues/5
Bumping version to 6.0.0.rc3