Support for autolinking

[helleroy]

React Native 0.60 introduced autolinking of native modules: https://reactnative.dev/blog/2019/07/03/version-60#native-modules-are-now-autolinked

Seeing how your docs only describe a manual linking process and that your package.json still requires: "peerDependencies": { "react-native": "^0.59.0" }, I assume you don't support autolinking yet?

It would be great if you added support for it, this library is the only module we have that's still manually linked.