Updated README.rst to reflect branching model.
Updated README.rst to reflect branching model.

coxley/trigger,coxley/trigger,eludom/trigger,chepazzo/trigger,kkirsche/trigger,rkerr/trigger,johnfzc/trigger,supertylerc/trigger,fritzstauff/trigger,eludom/trigger,kkirsche/trigger,azmd/trigger,jathanism/trigger,azmd/trigger,rkerr/trigger,johnfzc/trigger,chepazzo/trigger,fritzstauff/trigger,supertylerc/trigger,jathanism/trigger