Add nodejs 4.4.5 and 6.2.0, remove nodejs 4.4.3 and 6.0.0
Add nodejs 4.4.5 and 6.2.0, remove nodejs 4.4.3 and 6.0.0

[#120225945]
[#119775517]

Signed-off-by: Sam Smith <03a07629efb0a02c7bbe7cc340a4243da1ab861a@gmail.com>

karthikeyabhaghavatula/nodejs_buildpack,oocl-ncc-itm/nodejs-buildpack,roder/nodejs-buildpack,kauffecup/nodejs-buildpack,ks2software/nodejs-buildpack,roder/nodejs-buildpack,karthikeyabhaghavatula/nodejs_buildpack,cloudfoundry/nodejs-buildpack,ks2software/nodejs-buildpack,mmgm/nodejs-buildpack,roder/nodejs-buildpack,pkumar-appd/nodejs-buildpack,kauffecup/nodejs-buildpack,karthikeyabhaghavatula/nodejs_buildpack,Grahahax/nodejs-buildpack,mmgm/nodejs-buildpack,Grahahax/nodejs-buildpack,pkumar-appd/nodejs-buildpack,cloudfoundry/nodejs-buildpack,ks2software/nodejs-buildpack,NSWIDER/nodejs-oracle-buildpack,ks2software/nodejs-buildpack,cloudfoundry/nodejs-buildpack,pkumar-appd/nodejs-buildpack,Grahahax/nodejs-buildpack,kauffecup/nodejs-buildpack,ks2software/nodejs-buildpack,mmgm/nodejs-buildpack,ks2software/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,cloudfoundry/nodejs-buildpack,NSWIDER/nodejs-oracle-buildpack,ks2software/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,NSWIDER/nodejs-oracle-buildpack