code: function _use(config) {
      var _config = this._config;
  
      Object.keys(config).forEach(function(key) {
        _config[key] = config[key];
      });
  
      return this;
    }
docs: Extend the ticker's config.
  @param {{ limit: Number, async: Boolean, task: Function, stop: Function }} config
  @returns {Ticker}