Added --enable and --set-default to drush omega-subtheme. The functionality behind those two is self-explanatory I guess.

updated drush help text to be --starterkit=starterkit_omega_html5 instead of --starterkit=omega_html5_starterkit (wrong starterkit name in help)

update to make machine name properly use underscores as replacement. Long theme names would make unreadable function names in subthemes.

revoved all placeholder block rendering code, reverted it back to the omega theme as a theme setting