报错
npm ERR! code 1
npm ERR! path node_modules\node-sass
npm ERR! command failed
npm ERR! command c node scripts/build.js
安装镜像源：
npm config set registry https://registry.npm.taobao.org/
配置变量指向淘宝镜像：
npm config set sass_binary_site https://npm.taobao.org/mirrors/node-sass/
全局安装node-sass
npm install -g sass-loader node-sass