npm install git+ssh://git@github.com:xxx/xxx.git#master --save-dev
npm install git+ssh://git@github.com:npm/npm.git#v1.0.27
npm install git+https://isaacs@github.com/npm/npm.git
npm install git://github.com/npm/npm.git#v1.0.27
https://docs.npmjs.com/cli/install