版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/backbone.radio/2.0.0/backbone.radio.js
- https://cdn.bootcdn.net/ajax/libs/backbone.radio/2.0.0/backbone.radio.js.map
- https://cdn.bootcdn.net/ajax/libs/backbone.radio/2.0.0/backbone.radio.min.js
- https://cdn.bootcdn.net/ajax/libs/backbone.radio/2.0.0/backbone.radio.min.js.map