need RTL support for iOS and Android

[vinay-Bildarb]

Hi there, thanks for providing an awesome library that made our app walk through screens very nice. I've one issue here that the library currently doesn't have any support for RTL (both iOS and Android). So can you please add this feature and make our life more easier :)
Waiting for an early response.
Thanks in advance

[aliemara]

I had the same issue. Here's a simple PR for the fix. #131
Hope this helps and gets merged.