Share gems across multiple rbenv Ruby installs

Current version:

Homepage: https://github.com/tpope/rbenv-communal-gems

Formula history

Dominyk Tiller rbenv-communal-gems: use new rbenv dependency
Xu Cheng rbenv-communal-gems: bottle unneeded
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
Xu Cheng modernize and add test for rbenv and its family
Mike Barrett rbenv-communal-gems 1.0.1 (new formula)