bucks.js
function delay(ms) {
            return this.add(function (err, res, next) {
                setTimeout(function () {
                    next(err, res);
                }, ms || 0);
            });
        }
function delay(ms) {
            return this.add(function (err, res, next) {
                setTimeout(function () {
                    next(err, res);
                }, ms || 0);
            });
        }
msミリ秒だけ次の処理を遅延させます
@memberof Bucks
@instance
@param {int} ms 遅延させる時間[ms] default) 0
@return {Bucks}