def install
      fail if source_path.nil?
      fail if install_path.nil?
      FileUtils.mkdir_p install_path
      Palimpsest::Utils.copy_directory source_path, install_path
    end
def install
      fail if source_path.nil?
      fail if install_path.nil?
      FileUtils.mkdir_p install_path
      Palimpsest::Utils.copy_directory source_path, install_path
    end
Installs files in {#source_path} to {#install_path}