npm ERR! Windows_NT 6.2.9200
npm ERR! argv "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "update" "-g"
npm ERR! node v0.12.7
npm ERR! npm v2.11.3
npm ERR! code EPEERINVALID
npm ERR! peerinvalid The package grunt-contrib-clean does not satisfy its siblings' peerDependencies requirements!
npm ERR! peerinvalid Peer grunt-contrib@0.11.0 wants grunt-contrib-clean@~0.5.0