README: Apache transfer

Hi!

I've transferred as many people as I can to the jspwiki-user list @  
Apache.  The problem is that for some reason the EZLM at the other  
end is not approving all of the email addresses.  So, if you have  
*not* received the confirmation that you have been subscribed onto  
the [email protected] mailing list, please subscribe  
manually by sending an email to

[email protected]

This list will be closed by the end of the week, and all new emails  
should go to the Apache list.  The new instructions are already on  
jspwiki.org.

/Janne