Add node 4.7.0, remove node 4.6.1
Add node 4.7.0, remove node 4.6.1

source url: https://nodejs.org/dist/v4.7.0/node-v4.7.0.tar.gz, source sha256: 0bc45fc02e425746001a8f012d6781fa5da6e629a43654c84ab7e767368fec61

[#135648535]

cloudfoundry/nodejs-buildpack,ks2software/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,ks2software/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,cloudfoundry/nodejs-buildpack,ks2software/nodejs-buildpack,ks2software/nodejs-buildpack,cloudfoundry/nodejs-buildpack,ks2software/nodejs-buildpack,kauffecup/nodejs-buildpack,pkumar-appd/nodejs-buildpack,pkumar-appd/nodejs-buildpack,kauffecup/nodejs-buildpack,ks2software/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,kauffecup/nodejs-buildpack,ks2software/nodejs-buildpack,cloudfoundry/nodejs-buildpack,pkumar-appd/nodejs-buildpack