First pass at twisted process runner.
First pass at twisted process runner.

In particular, it kills the process, when the reactor is stopped.

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