class Bundler::Dsl

def source(source, options = {})
  source = case source
  when :gemcutter, :rubygems, :rubyforge then Source::Rubygems.new("uri" => "http://gemcutter.org")
  when String then Source::Rubygems.new("uri" => source)
  else source
  end
  options[:prepend] ? @sources.unshift(source) : @sources << source
  source
end