README.md in middleman-remover-1.0.1 vs README.md in middleman-remover-1.1.0

@@ -43,9 +43,11 @@
 end
 ```
 
 `middleman-remover` will remove `build/dir/*.html` and `build/.DS_Store`.
 
+__NOTICE:__ From v4.beta, Middleman remove `build/dir` if that is empty.
+
 Also you can remove directory:
 
 ```ruby
 configure :build do
   activate :remover, :paths => %w(/dir)