Update README.rst

Author: mrjoes

README.rst

@@ -2,6 +2,14 @@
 TornadIO2
 =========
 
+----------
+Disclaimer
+----------
+
+Unfortunately, Socket.IO 0.x branch is abandoned, there are huge amount of bugs and nothing getting fixed. I would suggest to look at alternative 
+options, for example `SockJS <http://github.com/sockjs/>`. There's `sockjs-tornado <http://github.com/mrjoes/sockjs-tornado/>` too.
+I don't plan to support TornadIO2 anymore, assuming that parent library is no longer maintained.
+
 Contributors
 ------------