thoughtbot/dotfiles — pull request #301 by derekprior (2014-09-12 15:21:55+00:00)
Title: Remove unused plugins after rcup

Running `rcup` should remove any plugins that are no longer in use. For
instance, we recently replaced `rename.vim` with `eunuch`. `rcup` installs the
new plugin but does not clean up `rename` from the plugins directory. The
addition of `PluginClean!` does this (without confirmation).