Project location on github changed in README file

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

README

@@ -26,8 +26,7 @@ Website: http://www.zeromq.org/
 Development mailing list: zeromq-dev@lists.zeromq.org
 Announcements mailing list: zeromq-announce@lists.zeromq.org
 
-Git repository for this release: http://github.com/zeromq/zeromq2-1.
-Repository for current development: http://github.com/zeromq/zeromq2.
+Git repository: http://github.com/zeromq/libzmq
 
 0MQ developers can also be found on the IRC channel #zeromq, on the
 Freenode network (irc.freenode.net).