README.md in smart_assets-0.1.0 vs README.md in smart_assets-0.2.0

@@ -26,12 +26,13 @@
 
     config.smart_assets.serve_non_digest_assets = false
 
 It is disabled by default for `development` environments, but may be enabled there using the above setting.
 
-`serve_static_assets` or `assets.compile` must be changed to true or the middleware will disable itself:
+`serve_static_files` (`serve_static_assets` in Rails 4.0-4.1), or `assets.compile` must be changed to true or the middleware will disable itself:
 
-    config.serve_static_assets = true
+    config.serve_static_files = true  # Rails 4.2+
+    config.serve_static_assets = true # Rails 4.0 & 4.1
 
 
 ## Installation
 
 Add this line to your application's Gemfile: