content: import React from 'react';
  
  const GithubButton = (props) => {
    const {user, repo, type, width, height, count, large} = props;
    let src = `https://ghbtns.com/github-btn.html?user=${user}&repo=${repo}&type=${type}`;
    if (count) src += '&count=true';
    if (large) src += '&size=large';
  
    return (
      <iframe
        src={src}
        frameBorder="0"
        allowTransparency="true"
        scrolling="0"
        width={width}
        height={height}
        style={{border: 'none', width: width, height: height}}></iframe>
    );
  };
  
  GithubButton.propTypes = {
    user: React.PropTypes.string.isRequired,
    repo: React.PropTypes.string.isRequired,
    type: React.PropTypes.oneOf(['star', 'watch', 'fork', 'follow']).isRequired,
    width: React.PropTypes.number.isRequired,
    height: React.PropTypes.number.isRequired,
    count: React.PropTypes.bool,
    large: React.PropTypes.bool
  };
  
  export default GithubButton;
  