Jarvis

 Repeated arrows.

When network transmission lag,`_readyCheck` not wait for auth response,that make redis client throw error and reconnection. 

Make sure the percentages are displayed completely.

https://github.com/alexmingoia/koa-router#exp_module_koa-router--Router 请查看链接。

添加一本前端书籍 《深入理解JavaScript》 这本书真的很赞。 本书作者的blog：[2ality.com](2ality.com)

## Checklist - [x] I have ensured my pull request is not behind the main or master branch of the original repository. - [x] I have rebased all commits where...