update podspec to RxSwift to 2.1
update podspec to RxSwift to 2.1
shiratsu/RxSwift,kzaher/RxSwift,cfraz89/RxSwift,KyoheiG3/RxSwift,cfraz89/RxSwift,shiratsu/RxSwift,kzaher/RxSwift,thanegill/RxSwift,thanegill/RxSwift,shiratsu/RxSwift,thanegill/RxSwift,kzaher/RxSwift,cfraz89/RxSwift,KyoheiG3/RxSwift,ReactiveX/RxSwift,cfraz89/RxSwift,kzaher/RxSwift,ReactiveX/RxSwift,thanegill/RxSwift,tottakai/RxSwift,tottakai/RxSwift,KyoheiG3/RxSwift,ReactiveX/RxSwift,tottakai/RxSwift