#1113 Link uml-reverse-mapper created class diagrams to readme, where needed

priority-queue/README.md

@@ -15,6 +15,9 @@ Prioritize requests sent to services so that requests with a higher priority are
 ## Explanation
 Applications may delegate specific tasks to other services; for example, to perform background processing or to integrate with other applications or services. In the cloud, a message queue is typically used to delegate tasks to background processing. In many cases the order in which requests are received by a service is not important. However, in some cases it may be necessary to prioritize specific requests. These requests should be processed earlier than others of a lower priority that may have been sent previously by the application.
 
+## Class diagram
+![alt text](./etc/priority-queue.urm.png "Priority Queue pattern class diagram")
+
 ## Applicability
 Use the Property pattern when