Reflecting word that v1.0 doesn't support 0.52+.

Fix url to the example demo. Please, only pull after accepting this PR: https://github.com/wix/react-native/pull/2

Add demo for example app.

Mention that the GIF demo is the real Wix app and remove the old example demo until we have an updated version.

* add v2 link to readme

* Update README.md

_lede_ is a [word](https://www.merriam-webster.com/dictionary/lede), not a spelling mistake. In case you were wondering.

* Update README.md

* Update README.md

There was no link for migration to v2 and changelog. It looks bad when dead links are on main readme, so I removed the link.

- NPM (Version / Downloads)
- Build Status
- Discord

Add Android installation instruction