Npm 被公司墙解决方法

npm被公司墙了，不能用npm安装任何包应用了。

npm ERR! Darwin 15.5.0
npm ERR! argv "/usr/local/Cellar/node/6.4.0/bin/node" "/usr/local/bin/npm" "install" "webpack"
npm ERR! node v6.4.0
npm ERR! npm v3.10.3
npm ERR! code UNABLE_TO_GET_ISSUER_CERT_LOCALLY

npm ERR! unable to get local issuer certificate
npm ERR! 
npm ERR! If you need help, you may report this error at:
npm ERR! <https://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR! /Users/huangtaizhao/les/react/npm-debug.log

在确定所安装的包是安全的情况下，可以这样做（关闭npm的https）：

npm config set strict-ssl false

➜  npm config set strict-ssl false