Add "Open with Codeanywhere" badge to README.md (#292)

Author: nkkko

README.md

@@ -9,6 +9,8 @@ and the Eureka Service Discovery from the [Spring Cloud Netflix](https://github.
 
 [![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/spring-petclinic/spring-petclinic-microservices)
 
+[![Open in Codeanywhere](https://codeanywhere.com/img/open-in-codeanywhere-btn.svg)](https://app.codeanywhere.com/#https://github.com/spring-petclinic/spring-petclinic-microservices)
+
 ## Starting services locally without Docker
 
 Every microservice is a Spring Boot application and can be started locally using IDE ([Lombok](https://projectlombok.org/) plugin has to be set up) or `../mvnw spring-boot:run` command. Please note that supporting services (Config and Discovery Server) must be started before any other application (Customers, Vets, Visits and API).