https://segmentfault.com/a/1190000002589144
nrm 是一個 NPM 源管理器，允許你快速地在如下 NPM 源間切換：
* 列表項目
* npm
* cnpm
* strongloop
* enropean
* australia
* nodejitsu
* taobao
### Install
~~~
sudo npm install -g nrm
~~~
### 如何使用？
列出可用的源：
~~~
? ~ nrm ls
npm ---- https://registry.npmjs.org/
cnpm --- http://r.cnpmjs.org/
taobao - http://registry.npm.taobao.org/
eu ----- http://registry.npmjs.eu/
au ----- http://registry.npmjs.org.au/
sl ----- http://npm.strongloop.com/
nj ----- https://registry.nodejitsu.com/
pt ----- http://registry.npmjs.pt/
~~~
切換：
~~~
? ~ nrm use taobao
Registry has been set to: http://registry.npm.taobao.org/
~~~
增加源：
~~~
nrm add <registry> <url> [home]
~~~
刪除源：
~~~
nrm del <registry>
~~~
測試速度：
~~~
nrm test
~~~
