lib/async-runner.js
function AsyncRunner(times, fn) {
  Runner.apply(this, arguments);

  this.pause = 0;
  this.end = noop;
  this.times = times;
}
function AsyncRunner(times, fn) {
  Runner.apply(this, arguments);

  this.pause = 0;
  this.end = noop;
  this.times = times;
}
function AsyncRunner ( times , fn ) { Runner . apply ( this , arguments ) ; this . pause = 0 ; this . end = noop ; this . times = times ; }
Async task runner.

@param {String|Number} times
@param {Function} [optional] task to execute
@constructor
Async task runner .