Address review comment: Explain what we're doing with stderr.
Address review comment: Explain what we're doing with stderr.

LaynePeng/flocker,w4ngyi/flocker,jml/flocker,moypray/flocker,adamtheturtle/flocker,lukemarsden/flocker,AndyHuu/flocker,wallnerryan/flocker-profiles,AndyHuu/flocker,Azulinho/flocker,lukemarsden/flocker,beni55/flocker,moypray/flocker,achanda/flocker,LaynePeng/flocker,agonzalezro/flocker,mbrukman/flocker,moypray/flocker,beni55/flocker,beni55/flocker,hackday-profilers/flocker,w4ngyi/flocker,lukemarsden/flocker,jml/flocker,wallnerryan/flocker-profiles,hackday-profilers/flocker,hackday-profilers/flocker,runcom/flocker,runcom/flocker,Azulinho/flocker,mbrukman/flocker,achanda/flocker,achanda/flocker,agonzalezro/flocker,agonzalezro/flocker,mbrukman/flocker,w4ngyi/flocker,wallnerryan/flocker-profiles,1d4Nf6/flocker,Azulinho/flocker,LaynePeng/flocker,adamtheturtle/flocker,1d4Nf6/flocker,AndyHuu/flocker,jml/flocker,adamtheturtle/flocker,runcom/flocker,1d4Nf6/flocker