do not support rails 2.3 or less
do not support rails 2.3 or less

jay3126/bullet,theass/bullet,sideci-sample/sideci-sample-bullet,flyerhzm/bullet,hannahbot/bullet,flyerhzm/bullet,eileencodes/bullet,dwb/bullet,dwb/bullet,jay3126/bullet,PikachuEXE/bullet,rstacruz/bullet,flyerhzm/bullet,sideci-sample/sideci-sample-bullet,sho-h/brakefast,rrosenblum/bullet,sho-h/brakefast,theass/bullet,yakovenkodenis/bullet,eileencodes/bullet,rrosenblum/bullet,danp60/bullet,hannahbot/bullet,rstacruz/bullet,PikachuEXE/bullet,danp60/bullet,yakovenkodenis/bullet