npm 安装git发布的包
npm install git+https://git@github.com:xxxxxxx.git#master
如果是私有库
npm install git+https://username:password@github.com:xxxxxxx.git#master
npm install git+https://git@github.com:xxxxxxx.git#master
如果是私有库
npm install git+https://username:password@github.com:xxxxxxx.git#master