README.md in trax_controller-0.1.4 vs README.md in trax_controller-1.0.0

@@ -4,10 +4,11 @@
 
 ### Standards
 
 More soon.
 
-
+### Versions
+Please use >= 1.0.0 if you are using ruby 3, or 0.1.4 if you are using <= ruby 3.0
 
 ``` ruby
 class Admin::Api::WidgetsController < ::Admin::Api::BaseController
   include ::Trax::Controller