Updated podspec to 0.9.0-alpha.3
Updated podspec to 0.9.0-alpha.3

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