Added the [rbenv-ctags](https://github.com/tpope/rbenv-ctags) plugin.
Added the [rbenv-ctags](https://github.com/tpope/rbenv-ctags) plugin.

* Builds CTags for the Ruby standard library.

BecomingCoder/osx,empty23/osx,stevenqzhang/osx,empty23/osx,masterots/osx_setup