Add ronn as a development dependency.
Add ronn as a development dependency.

The ronn gem is used to create the roff manpages from the *.ronn files.

nevans/resque-pool,jari-omniata/resque-pool,PeopleAdmin/resque-pool,nevans/resque-pool,kcrayon/resque-pool,ShippingEasy/resque-pool,kcrayon/resque-pool,joshuaflanagan/resque-pool,joshuaflanagan/resque-pool,PeopleAdmin/resque-pool,jari-omniata/resque-pool,joshuaflanagan/resque-pool,kcrayon/resque-pool,PeopleAdmin/resque-pool