It would be good to have a showcase of how Narayana REST-AT works on Spring Boot.
The REST-AT is currently integrated only with JAX-RS (not with the Spring Boot WebFramework!, until JBTM-3288 is fixed).
So the showcase should be using the Spring Boot when the JAX-RS is used there.

Thus the quickstart would show the integration of Narayana REST-AT with Spring boot using the JAX-RS starter (https://github.com/resteasy/resteasy-spring-boot), probably then the whole pack deployed on WildFly (it depends on the implementor decision and the integration possibilities).