Disable ios builds in travis until RAC signing issue is resolved
Disable ios builds in travis until RAC signing issue is resolved

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