Update readme.md

Author: dfilatov

readme.md

@@ -1,3 +1,5 @@
+THIS PROJECT IS OUTDATED AND IS NOT SUPPORTED. USE IT AT YOUR OWN RISK.
+
 jQuery plugins
 ==============
 
@@ -19,4 +21,4 @@ Implementation of observable pattern
 
 [$.inherit](https://github.com/dfilatov/jquery-plugins/tree/master/src/jquery.inherit)
 --------------------------------------------------------------------------------------
-Implementation of "class" declarations and inheritance pattern
+Implementation of "class" declarations and inheritance pattern