Update README.md

README.md

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 ## Important
-Latest stable version is `1.1.x` and is published to npm under tag `latest`. It supports react-native >= 0.43.
+Latest stable version is `1.1.x` and is published to npm under tag `latest`. It supports react-native >= 0.48.
 <br><br>We are currently redesigning and rewriting this project under branch `v2`.
 <br>As a result, new features and pull requests on the current stable version will take more time to process.