Update README.md

[GantMan]

No description provided.

[johanneslumpe]

@GantMan I fail to see how this is related to this module?

[GantMan]

I had previously written a quick example at the top since this is deprecated.

I figured to link to a more in-depth article on the options that available today, since this item still shows up in google for me, when searching how to avoid the keyboard in React Native. This way people find the information they may need, faster.

Not sure if it's the best practice, but better than nothing imo.