homebrew formula for ruby-version

ruby-version.rb

require 'formula'

class RubyVersion < Formula
  url 'https://github.com/wilmoore/ruby-version/tarball/0.0.2'
  homepage 'https://github.com/wilmoore/ruby-version'
  md5 '6ad742ce279030fab82b192596a362f3'

  head 'https://github.com/wilmoore/ruby-version.git'

  def install
    prefix.install Dir['*']
  end

  def caveats;
    <<-EOS.undent
        Add the following into your $HOME/.bashrc or $HOME/.bash_profile or your shell's equivalent:

        ########################################################################################
        # ruby-version (activate default Ruby version and autocompletion)
        # export RUBY_HOME                      => reflects location of compiled Ruby versions
        # export RUBYVERSION_DISABLE_COMPLETE=1 => to disable shell completion
        ########################################################################################
        export $RUBY_HOME=${HOME}/local/ruby
        export $RUBY_VERSIONS=${RUBY_HOME}/versions
        source $(brew --prefix ruby-version)/ruby-version.sh && ruby-version 1.9.3-rc1 >/dev/null
    EOS
  end
end