Proof of concept of App Link redirection flow for Android app

How to run

1. Go to service: cd service
2. Setup dependencies: bundle install
3. Start ngrok on 4567 port: ngrok http 4567
4. Setup host in sinatra.rb and in AndroidManifest.xml
5. Setup /service/public/.well-known/assetlinks.json
6. Run project: ruby service.rb
7. Build Android app