λ npm install -g gulpnpm WARN package.json jwz@1.0.0 No repository field.npm WARN package.json jwz@1.0.0 No README datanpm ERR! Windows_NT 10.0.10586npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "g" "gulp"npm ERR! node v4.4.4npm ERR! npm ?v2.15.1npm ERR! code ENOTFOUNDnpm ERR! errno ENOTFOUNDnpm ERR! syscall getaddrinfonpm ERR! network getaddrinfo ENOTFOUND server server:80npm ERR! network This is most likely not a problem with npm itselfnpm 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! networknpm ERR! network If you are behind a proxy, please make sure that thenpm ERR! network 'proxy' config is set properly. ?See: 'npm help config'npm ERR! Please include the following file with any support request:npm ERR! ? ? C:\Users\lenovo\npm-debug.log