updateProjectColumn(colId, options, cb) {
      return this._request('PATCH', `/projects/columns/${colId}`, options, cb);
   }
Edit a column
@see https://developer.github.com/v3/projects/columns/#update-a-project-column
@param {string} colId - the column id
@param {Object} options - the description of the column
@param {Requestable.callback} cb - will receive the modified column
@return {Promise} - the promise for the http request