createRepo(options, cb) {
      return this._request('POST', `/orgs/${this.__name}/repos`, options, cb);
   }
Create a repository in an organization
@see https://developer.github.com/v3/repos/#create
@param {Object} options - the repository definition
@param {Requestable.callback} [cb] - will receive the created repository
@return {Promise} - the promise for the http request