有時候在使用vue-cli的時候會出現類似下面的錯誤：
npm ERR! Windows_NT 10.0.14393
npm ERR! argv "D:\Programs\nodejs\node.exe" "D:\Programs\nodejs\node_modules\npm\bin\npm-cli.js" "install" "-g" "phantomjs-prebuilt"
npm ERR! node v7.8.0
npm ERR! npm v4.2.0
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! phantomjs-prebuilt@2.1.14 install: node install.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the phantomjs-prebuilt@2.1.14 install script 'node install.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the phantomjs-prebuilt package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node install.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs phantomjs-prebuilt
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls phantomjs-prebuilt
npm ERR! There is likely additional logging output above.
主要的原因是因為有牆，訪問太慢，導致npm鏈接超時，官方原話在這里Error: connect ETIMEDOUT
解決方法：
方法1.開代理，這個就不講啦，網上一大堆
方法2.使用cnpm命令
#卸載安裝失敗的phantomjs-prebuilt
npm uninstall phantomjs-prebuilt --save-dev
cnpm install
方法3.使用以下命令進行安裝：
npm install phantomjs-prebuilt@2.1.14 --ignore-scripts
這種方法來自Stackoverflow