[iOS] Resolve NSDictionary in upload/download method
[iOS] Resolve NSDictionary in upload/download method

mybigday/react-native-s3,nharlow89/react-native-s3,mybigday/react-native-s3,mybigday/react-native-s3,nharlow89/react-native-s3,nharlow89/react-native-s3,nharlow89/react-native-s3,mybigday/react-native-s3