added some more words to README..

README

@@ -5,7 +5,7 @@ else.
 Sounds like a very simple client/server.  So here I've adapted
 the pre-existing raspberry-pi-phonehome listener daemon to be a 
 command-listener.  The command is a variable inside the script
-of course.
+of course.  Note that the command-listener logs to /tmp/command-listener.log
 
 In addition, I wrote a very simple cat-client that connects to
 a server (like telnet) and grabs the output..