Issue #103: Document authenticated agent losing history when using th…

…e web ui.

README.md

@@ -46,7 +46,7 @@ Configuration is handled entirely by [Dropwizard](http://dropwizard.io/manual/co
 
     $ java -jar target/jmxproxy-3.2.0.jar server config.yaml
 
-For example to configure the port server listen port for both application and admin servlets:
+For example, to configure the listening port for both application and admin servlets:
 
 ```yaml
 server:
@@ -212,6 +212,7 @@ JMXProxy service has the following miscelleneous APIs for convinience and UI bui
 Limitations
 -----------
 
+* Agents with authentication enabled, have their history purged when connecting from the Web UI.
 * SSL agent connections are currently not supported.  Remote JVM must be started with `-Dcom.sun.management.jmxremote.ssl=false`.