版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/angular-relative-date/2.1.1/angular-relative-date.js
- https://cdn.bootcdn.net/ajax/libs/angular-relative-date/2.1.1/angular-relative-date.js.map
- https://cdn.bootcdn.net/ajax/libs/angular-relative-date/2.1.1/angular-relative-date.min.js
- https://cdn.bootcdn.net/ajax/libs/angular-relative-date/2.1.1/angular-relative-date.min.js.map