docs: function GithubContent(options) {
    if (!(this instanceof GithubContent)) {
      return new GithubContent(options);
    }
  
    // setup our specific options
    var opts = extend({branch: 'master'}, options);
    opts.json = false;
    opts.apiurl = 'https://raw.githubusercontent.com';
    GithubBase.call(this, opts);
    this.options = extend({}, opts, this.options);
  }