def targz(name, options = {})
      url = options.fetch(:url)
      remote_source = RemoteSources::Targz.new(url)
      packages << Package.new(name, remote_source, options)
    end
def targz(name, options = {})
      url = options.fetch(:url)
      remote_source = RemoteSources::Targz.new(url)
      packages << Package.new(name, remote_source, options)
    end
Adds {Package} with {RemoteSources::Targz} to {#packages}
 @since 0.3.0