/**
 * Angular directive/filter/service for formatting date so that it displays how long ago the given time was compared to now.
 * @version v0.2.4 - 2015-08-30
 * @link https://github.com/yaru22/angular-timeago
 * @author Brian Park <yaru22@gmail.com>
 * @license MIT License, http://www.opensource.org/licenses/MIT
 */