mod_erlang_event: Update config file with new option and add some comments

conf/autoload_configs/erlang_event.conf.xml

@@ -2,7 +2,16 @@
   <settings>
     <param name="listen-ip" value="0.0.0.0"/>
     <param name="listen-port" value="8031"/>
+    <!-- Specify the first part of the node name
+         (the host part after the @ will be autodetected)
+         OR pass a complete nodename to avoid autodetection
+         eg. freeswitch@example or freeswitch@example.com.
+         If you pass a complete node name, the 'shortname' parameter has no effect. -->
+    <param name="nodename" value="freeswitch"/>
+    <!-- Specify this OR 'cookie-file' or $HOME/.erlang.cookie will be read -->
     <param name="cookie" value="ClueCon"/>
+    <!-- Read a cookie from an arbitary erlang cookie file instead -->
+    <!--<param name="cookie-file" value="/tmp/erlang.cookie"/>-->
     <param name="shortname" value="true"/>
     <!-- in additon to cookie, optionally restrict by ACL -->
     <!--<param name="apply-inbound-acl" value="lan"/>-->