moveProjectCard(cardId, position, colId, cb) {
      return this._request(
         'POST',
         `/projects/columns/cards/${cardId}/moves`,
         {position: position, column_id: colId}, // eslint-disable-line camelcase
         cb
      );
   }
Move a card
@see https://developer.github.com/v3/projects/cards/#move-a-project-card
@param {string} cardId - the card to be moved
@param {string} position - can be one of top, bottom, or after:<card-id>,
where <card-id> is the id value of a card in the same project.
@param {string} colId - the id value of a column in the same project.
@param {Requestable.callback} cb - will receive true if the operation is successful
@return {Promise} - the promise for the http request