Add some doc comments.
Add some doc comments.

bac/juju,bz2/juju,tsakas/juju,mikemccracken/juju,AdamIsrael/juju,mjs/juju,gabriel-samfira/juju,axw/juju,cloud-green/juju,dooferlad/juju,anastasiamac/juju,mjs/juju,perrito666/juju,frankban/juju,davecheney/juju,makyo/juju,perrito666/juju,Altoros/juju-cloudsigma,makyo/juju,cherylj/juju,bac/juju,sinzui/juju,cloud-green/juju,mhilton/juju,cherylj/juju,dooferlad/juju,waigani/juju,fwereade/juju,alesstimec/juju,mikemccracken/juju,bogdanteleaga/juju,tasdomas/juju,wwitzel3/juju,thomnico/juju,bz2/juju,perrito666/juju,bogdanteleaga/juju,Altoros/juju-cloudsigma,ericsnowcurrently/juju,waigani/juju,wwitzel3/juju,reedobrien/juju,reedobrien/juju,reedobrien/juju,mhilton/juju,frankban/juju-tmp,gabriel-samfira/juju,fwereade/juju,axw/juju,kat-co/juju,howbazaar/juju,howbazaar/juju,mikemccracken/juju,anastasiamac/juju,cherylj/juju,macgreagoir/juju,mjs/juju,mhilton/juju,tasdomas/juju,voidspace/juju,davecheney/juju,howbazaar/juju,tsakas/juju,voidspace/juju,davecheney/juju,kat-co/juju,dimitern/juju,fwereade/juju,macgreagoir/juju,frankban/juju,mjs/juju,bac/juju,dimitern/juju,thomnico/juju,anastasiamac/juju,wwitzel3/juju,anastasiamac/juju,alesstimec/juju,frankban/juju-tmp,sinzui/juju,axw/juju,bac/juju,mhilton/juju-juju,frankban/juju-tmp,tsakas/juju,sinzui/juju,cloud-green/juju,ericsnowcurrently/juju,mhilton/juju-juju,waigani/juju,dimitern/juju,frankban/juju,cherylj/juju,dimitern/juju,alesstimec/juju,makyo/juju,tych0/juju,anastasiamac/juju,frankban/juju,AdamIsrael/juju,marcmolla/juju,bz2/juju,tasdomas/juju,frankban/juju-tmp,bogdanteleaga/juju,mjs/juju,mjs/juju,frankban/juju,dooferlad/juju,thomnico/juju,tsakas/juju,macgreagoir/juju,wwitzel3/juju,tych0/juju,bac/juju,mhilton/juju-juju,perrito666/juju,reedobrien/juju,cloud-green/juju,voidspace/juju,dooferlad/juju,mhilton/juju-juju,alesstimec/juju,marcmolla/juju,reedobrien/juju,ericsnowcurrently/juju,kat-co/juju,mjs/juju,mikemccracken/juju,tasdomas/juju,Altoros/juju-cloudsigma,macgreagoir/juju,voidspace/juju,thomnico/juju,ericsnowcurrently/juju,sinzui/juju,AdamIsrael/juju,davecheney/juju,fwereade/juju,dimitern/juju,perrito666/juju,mikemccracken/juju,bz2/juju,alesstimec/juju,howbazaar/juju,kat-co/juju,axw/juju,ericsnowcurrently/juju,mhilton/juju,gabriel-samfira/juju,marcmolla/juju,waigani/juju,macgreagoir/juju,AdamIsrael/juju,howbazaar/juju,tych0/juju,makyo/juju,kat-co/juju,dooferlad/juju,marcmolla/juju,gabriel-samfira/juju,gabriel-samfira/juju,tych0/juju,bz2/juju,marcmolla/juju,Altoros/juju-cloudsigma,axw/juju,bogdanteleaga/juju