code: function parseGithubURL(url) {
    var githubUrlRe = /github\.com\/([^/]+)\/([^/]+)\/pull\/([0-9]+)/;
    var match = url.match(githubUrlRe);
  
    if (!match) {
      return null;
    }
  
    return {
      owner: match[1],
      repo: match[2],
      number: match[3]
    };
  }
docs: Helper that converts URLs into GitHub resource objects
  compatible with node-github
  @param  {String} url - A GitHub resource URL
  @return {Object} GitHub resource parsed from URL