update README to reflect inclusion in squirrelmail-core-plugins

plugins/listcommands/README

@@ -1,4 +1,4 @@
-List Commands plugin -- v1.3
+List Commands plugin
 
 This plugin gives the user a menu of mailinglist options such as
 (un)subscribe, help and archives when viewing messages from compliant
@@ -26,29 +26,13 @@ of the features offered.
 Installation
 ============
 
-As with other plugins, just uncompress the archive in the plugins
-directory, go back to the main directory, run configure and add the plugin.
-
-Questions/comments/flames/etc can be sent to
-    Thijs Kinkhorst <thijs@kinkhorst.com>
-
-
-Changes
-=======
-1.0
- * Initial version
-1.1
- * Added 'Reply to list' option
- * Support for identities when sending mail
- * Miscelaneous minor improvements
-1.2
- * Fixed too greedy regexp; changed to PCRE.
- * Fixed IMAP session id handling.
-1.3
- * Fixes to allow internationalization.
+Go to the main directory, run configure and add the plugin.
 
 
 Acknowledgements
 ================
+The listcommands plugin has been originally created by Thijs Kinkhorst and is
+now under the control of the SquirrelMail Project Team.
+
 I'd like to thank Peter Walker, Wouter Teepe, Jason Edwards and Phillipe Mingo
 for their useful contributions to this plugin.