Add the doc for the hook command.
Add the doc for the hook command.

makyo/juju,howbazaar/juju,reedobrien/juju,macgreagoir/juju,macgreagoir/juju,gabriel-samfira/juju,marcmolla/juju,howbazaar/juju,reedobrien/juju,dimitern/juju,bac/juju,makyo/juju,marcmolla/juju,howbazaar/juju,bac/juju,makyo/juju,gabriel-samfira/juju,axw/juju,AdamIsrael/juju,gabriel-samfira/juju,bz2/juju,mjs/juju,bogdanteleaga/juju,dooferlad/juju,reedobrien/juju,davecheney/juju,howbazaar/juju,davecheney/juju,dimitern/juju,dooferlad/juju,axw/juju,waigani/juju,marcmolla/juju,marcmolla/juju,ericsnowcurrently/juju,mjs/juju,axw/juju,bz2/juju,AdamIsrael/juju,gabriel-samfira/juju,reedobrien/juju,axw/juju,macgreagoir/juju,bogdanteleaga/juju,bz2/juju,mjs/juju,dimitern/juju,alesstimec/juju,frankban/juju,marcmolla/juju,ericsnowcurrently/juju,kat-co/juju,frankban/juju,davecheney/juju,AdamIsrael/juju,davecheney/juju,mikemccracken/juju,bz2/juju,alesstimec/juju,anastasiamac/juju,kat-co/juju,anastasiamac/juju,macgreagoir/juju,bac/juju,alesstimec/juju,dimitern/juju,dooferlad/juju,perrito666/juju,dooferlad/juju,AdamIsrael/juju,bac/juju,dooferlad/juju,perrito666/juju,anastasiamac/juju,mjs/juju,dimitern/juju,howbazaar/juju,ericsnowcurrently/juju,alesstimec/juju,frankban/juju,mikemccracken/juju,mjs/juju,macgreagoir/juju,waigani/juju,mjs/juju,alesstimec/juju,bz2/juju,mjs/juju,perrito666/juju,gabriel-samfira/juju,perrito666/juju,makyo/juju,bac/juju,kat-co/juju,waigani/juju,kat-co/juju,waigani/juju,ericsnowcurrently/juju,mikemccracken/juju,axw/juju,frankban/juju,kat-co/juju,frankban/juju,perrito666/juju,ericsnowcurrently/juju,bogdanteleaga/juju,anastasiamac/juju,mikemccracken/juju,reedobrien/juju,anastasiamac/juju,mikemccracken/juju,bogdanteleaga/juju