message: Add copyright at the new file
diff: +/**
  + * Copyright (c) Facebook, Inc.
  + * All rights reserved.
  + *
  + * This source code is licensed under the license found in the
  + * LICENSE file in the root directory of this source tree.
  + */
  +
  import React, { PropTypes } from 'react';
  import TypeLink from './TypeLink';
  