@Zenon: You look for a step by step guide or just some pointers? I don't have a step by step guide available right now but what you want to do is
- Add the API App SDK as I show at the beginning of the episode
- Then edit the apiapp.json file and make apiDefinition property in the endpoints array to point to the swagger metadata endpoint of ServiceStack.
- Deploy as normal from within Visual Studio
Let me know if that is not enough and I'll try to cook something up.