content: import React from 'react';
  import classNames from 'classnames';
  
  const Tag = ({ selected, title, changeKey, handleChange }) => (
    <button
      className={classNames({ selected })}
      onClick={() => handleChange(changeKey)}
    >
      {title}
    </button>
  );
  
  Tag.propTypes = {
    title: React.PropTypes.string,
    selected: React.PropTypes.bool,
    handleChange: React.PropTypes.func,
    changeKey: React.PropTypes.string,
  };
  
  export default Tag;
  