README.md in faml-0.2.10 vs README.md in faml-0.2.11

@@ -25,9 +25,11 @@
 ## Usage
 
 ### Rails, sinatra
 Just replace your `gem 'haml'` with `gem 'faml'` .
 
+faml is only tested with Rails >= 4.0.
+
 ### middleman
 Since middleman has its own renderers, there's no easy way to use faml with middleman currently.
 
 ### Others
 faml provide a [tilt](https://github.com/rtomayko/tilt) interface.