Protocols for all arities
Protocols for all arities

calebd/ReactiveCocoa,ohwutup/ReactiveCocoa,ohwutup/ReactiveCocoa,neilpa/Rex,walkingsmarts/ReactiveCocoa,ohwutup/ReactiveCocoa,RACCommunity/Rex,RACCommunity/Rex,calebd/ReactiveCocoa,ikesyo/Rex,ikesyo/Rex,walkingsmarts/ReactiveCocoa,walkingsmarts/ReactiveCocoa,bjarkehs/Rex,RACCommunity/Rex,calebd/ReactiveCocoa,bjarkehs/Rex,neilpa/Rex