尝试使用npm安装gulp：
npm install gulp
收到以下错误：
npm ERR! fetch failed https://registry.npmjs.org/minimist/-/minimist-1.1.1.tgz
npm ERR! fetch failed https://registry.npmjs.org/minimist/-/minimist-1.1.1.tgz
npm ERR! fetch failed https://registry.npmjs.org/minimist/-/minimist-1.1.1.tgz
npm ERR! network tunneling socket could not be established, cause=connect ETIMEDOUT
npm ERR! network This is most likely not a problem with npm itself
npm ERR! network and is related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settings.
npm ERR! network
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly. See: 'npm help config'
npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "gulp"
npm ERR! cwd C:\gulpapp
npm ERR! node -v v0.10.33
npm ERR! npm -v 1.4.28
npm ERR! code ECONNRESET
npm ERR! not ok code 0
然后我尝试了这个：
npm config set proxy=null
也没解决。怎么绕过这个？