版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/iconate/0.3.1/iconate.js
- https://cdn.bootcdn.net/ajax/libs/iconate/0.3.1/iconate.min.css
- https://cdn.bootcdn.net/ajax/libs/iconate/0.3.1/iconate.min.js
A light-weight library to animate your font-awesome like icons