Update release notes to mention 15.04 packages
Update release notes to mention 15.04 packages

1d4Nf6/flocker,1d4Nf6/flocker,AndyHuu/flocker,moypray/flocker,wallnerryan/flocker-profiles,achanda/flocker,achanda/flocker,Azulinho/flocker,LaynePeng/flocker,achanda/flocker,moypray/flocker,1d4Nf6/flocker,agonzalezro/flocker,adamtheturtle/flocker,jml/flocker,mbrukman/flocker,w4ngyi/flocker,LaynePeng/flocker,hackday-profilers/flocker,agonzalezro/flocker,agonzalezro/flocker,wallnerryan/flocker-profiles,adamtheturtle/flocker,jml/flocker,adamtheturtle/flocker,Azulinho/flocker,mbrukman/flocker,lukemarsden/flocker,jml/flocker,wallnerryan/flocker-profiles,LaynePeng/flocker,hackday-profilers/flocker,Azulinho/flocker,AndyHuu/flocker,hackday-profilers/flocker,moypray/flocker,w4ngyi/flocker,AndyHuu/flocker,lukemarsden/flocker,w4ngyi/flocker,mbrukman/flocker,lukemarsden/flocker