code: function (item) {
  		var items = this.items;
  		var removed = 0;
  		for (var i = 0, l = items.length; i < l; i++) {
  			if (items[i] === item) {
  				items.splice(i, 1);
  				i--;
  				removed++;
  			}
  		}
  		return removed;
  	}
docs: Remove a specific item from the collection
  @param {*} item Item to remove
  @return {int} Number of items which have been removed
  @fires remove