adding a note regarind transaction abort

git-svn-id: https://svn.apache.org/repos/asf/activemq/stomp/trunk@804200 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/webgen/src/stomp10/additional.page b/webgen/src/stomp10/additional.page
index 6352936..627b300 100644
--- a/webgen/src/stomp10/additional.page
+++ b/webgen/src/stomp10/additional.page
@@ -48,6 +48,8 @@
 
 Would "undo" the ack and send
 
+_Note: you should always discard all the content on your wire (socket) before sending ABORT frame, or those messages can be mistakenly delivered to the client_
+
 #Character Encoding
 
 We need to acknowledge character encoding and set some expectations. Much of this is taken from suggestions by SER (whom I don't otherwise know).