Update README.md

Author: thomaswoehlke

README.md

@@ -9,3 +9,5 @@ learn-springboot-reactive-stack
 * [Spring WebFlux Tutorial](https://howtodoinjava.com/spring-webflux/spring-webflux-tutorial/)
 * [Migrating a microservice to Spring WebFlux](https://allegro.tech/2019/07/migrating-microservice-to-spring-webflux.html)
 * [Seminararbeit: Reactive Web Backends mit Spring WebFlux](https://tschutschu.de/resources/tschutschu/docs/SS2019/SS2019_T09_Fuchs_Michael_Studienarbeit.pdf)
+*[Reactive Programming with Spring 5 WebFlux](https://stackabuse.com/reactive-programming-with-spring-5-webflux/)
+* [Build RESTful APIs using SpringBoot/WebFlux](https://www.youtube.com/watch?v=IK26KdGRl48&list=PLnXn1AViWyL70R5GuXt_nIDZytYBnvBdd&index=1)