README.md in green-button-data-0.3.2 vs README.md in green-button-data-0.4.0.alpha.pre.1

@@ -56,9 +56,13 @@
 
 Note that each path _must_ end with a trailing slash.
 
 #### Rails Integration
 
+> **IMPORTANT:** Version 0.3.0 has a bug which causes Rails not to boot
+correctly. Please use 0.3.1 or higher when integrating into Rails by
+running `bundle update green-button-data`.
+
 If you are developing a Rails app, create a file at
 `config/initializers/green_button_data.rb` from your Rails project root and
 add the configuration there.
 
 ## Green Button Data API Client