refactor: added query param includeMetadata (#106)

diff --git a/generic-examples/saga/Saga.java b/generic-examples/saga/Saga.java
index ccaa78a..7ab4c5b 100644
--- a/generic-examples/saga/Saga.java
+++ b/generic-examples/saga/Saga.java
@@ -30,7 +30,7 @@
 		service.setLocalParticipantUrl("http://saga");
 		getContext().addService(service);
 
-		from("timer:clock?period=5000")
+		from("timer:clock?period=5000&includeMetadata=true")
 			.saga()
 			.setHeader("id", header(Exchange.TIMER_COUNTER))
 			.setHeader(Exchange.HTTP_METHOD, constant("POST"))