版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/rickshaw/1.7.1/rickshaw.css
- https://cdn.bootcdn.net/ajax/libs/rickshaw/1.7.1/rickshaw.js
- https://cdn.bootcdn.net/ajax/libs/rickshaw/1.7.1/rickshaw.min.css
- https://cdn.bootcdn.net/ajax/libs/rickshaw/1.7.1/rickshaw.min.js