版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/nprogress/0.2.0/nprogress.css
- https://cdn.bootcdn.net/ajax/libs/nprogress/0.2.0/nprogress.js
- https://cdn.bootcdn.net/ajax/libs/nprogress/0.2.0/nprogress.min.css
- https://cdn.bootcdn.net/ajax/libs/nprogress/0.2.0/nprogress.min.js