fix for #925

Author: fehguy

modules/swagger-codegen/src/main/resources/JavaJaxRS/README.mustache

@@ -6,3 +6,9 @@ This server was generated by the [swagger-codegen](https://github.com/swagger-ap
 is an example of building a swagger-enabled JAX-RS server.
 
 This example uses the [JAX-RS](https://jax-rs-spec.java.net/) framework.
+
+To run the server, please execute the following:
+
+```
+mvn clean package jetty:run
+```