npm 镜像

http://registry.cnpmjs.org

http://registry.npm.taobao.org

设置：

npm config set registry http://registry.npm.taobao.org

$ nrm ls
 
* npm -----  https://registry.npmjs.org/
  cnpm ----  http://r.cnpmjs.org/
  taobao --  https://registry.npm.taobao.org/
  nj ------  https://registry.nodejitsu.com/
  rednpm -- http://registry.mirror.cqupt.edu.cn
  skimdb -- https://skimdb.npmjs.com/registry