1. npm config set registry "https://registry.npm.taobao.org"
    2. npm install -g cnpm --registry=https://registry.npm.taobao.org
    3. npm config set sass_binary_site=https://npm.taobao.org/mirrors/node-sass/
    4. npm config set phantomjs_cdnurl=https://npm.taobao.org/mirrors/phantomjs/
    5. npm config set electron_mirror=https://npm.taobao.org/mirrors/electron/