def zip(name, options = {})
      url = options.fetch(:url)
      remote_source = RemoteSources::Zip.new(url)
      packages << Package.new(name, remote_source, options)
    end
def zip(name, options = {})
      url = options.fetch(:url)
      remote_source = RemoteSources::Zip.new(url)
      packages << Package.new(name, remote_source, options)
    end
Adds {Package} with {RemoteSources::Zip} to {#packages}