pm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! phantomjs-prebuilt@2.1.15 install: `node install.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the phantomjs-prebuilt@2.1.15 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
解决方法：进入项目目录，运行命令：
npm install --save-dev node-sass
