Fixes from review.
Fixes from review.

- Trailing whitespace removed.
- Comment on LaunchPluginFn corrected.
- Added doc comment to ProcLaunchCommand

makyo/juju,dimitern/juju,frankban/juju,bac/juju,makyo/juju,marcmolla/juju,reedobrien/juju,kat-co/juju,axw/juju,bogdanteleaga/juju,alesstimec/juju,ericsnowcurrently/juju,bac/juju,marcmolla/juju,frankban/juju,frankban/juju,AdamIsrael/juju,wwitzel3/juju,davecheney/juju,dooferlad/juju,axw/juju,mikemccracken/juju,bz2/juju,bogdanteleaga/juju,howbazaar/juju,mjs/juju,ericsnowcurrently/juju,makyo/juju,fwereade/juju,mjs/juju,alesstimec/juju,mikemccracken/juju,voidspace/juju,gabriel-samfira/juju,perrito666/juju,howbazaar/juju,bac/juju,marcmolla/juju,mikemccracken/juju,perrito666/juju,mjs/juju,davecheney/juju,alesstimec/juju,kat-co/juju,kat-co/juju,gabriel-samfira/juju,howbazaar/juju,perrito666/juju,marcmolla/juju,wwitzel3/juju,AdamIsrael/juju,gabriel-samfira/juju,davecheney/juju,axw/juju,mjs/juju,axw/juju,bogdanteleaga/juju,bogdanteleaga/juju,voidspace/juju,macgreagoir/juju,fwereade/juju,ericsnowcurrently/juju,mjs/juju,perrito666/juju,bz2/juju,voidspace/juju,makyo/juju,reedobrien/juju,bz2/juju,mikemccracken/juju,dimitern/juju,dooferlad/juju,fwereade/juju,wwitzel3/juju,mikemccracken/juju,bac/juju,marcmolla/juju,bz2/juju,macgreagoir/juju,frankban/juju,mjs/juju,dooferlad/juju,macgreagoir/juju,AdamIsrael/juju,waigani/juju,macgreagoir/juju,dimitern/juju,gabriel-samfira/juju,anastasiamac/juju,anastasiamac/juju,dooferlad/juju,AdamIsrael/juju,macgreagoir/juju,dimitern/juju,davecheney/juju,kat-co/juju,frankban/juju,reedobrien/juju,waigani/juju,fwereade/juju,gabriel-samfira/juju,anastasiamac/juju,anastasiamac/juju,alesstimec/juju,waigani/juju,wwitzel3/juju,waigani/juju,ericsnowcurrently/juju,dooferlad/juju,anastasiamac/juju,howbazaar/juju,bac/juju,alesstimec/juju,perrito666/juju,voidspace/juju,ericsnowcurrently/juju,bz2/juju,kat-co/juju,reedobrien/juju,mjs/juju,howbazaar/juju,axw/juju,dimitern/juju,reedobrien/juju