class Thor

def self.package_task(spec)
  desc "package", "package up the gem"
  define_method :package do
    FileUtils.mkdir_p(File.join(Dir.pwd, "pkg"))
    Gem::Builder.new(spec).build
    FileUtils.mv(spec.file_name, File.join(Dir.pwd, "pkg", spec.file_name))
  end
end