Update README to clarify it's supported for latest RN version

[bfelbo]

The README currently specifies RN 0.62, which was released about 4 years ago. It'd be great to know if this library works with latest React Native versions?

[akshetpandey]

I haven't touched it in a bit and it is unlikely to work with the lastest RN. I can try to update it over the weekend.

Also apple now support quic in NSURLSession so this library isn't needed anymore