README.md in jbuilder-2.11.5 vs README.md in jbuilder-2.12.0

@@ -336,9 +336,13 @@
 
 ``` ruby
 Jbuilder.deep_format_keys true
 ```
 
+## Testing JBuilder Response body with RSpec
+
+To test the response body of your controller spec, enable `render_views` in your RSpec context. This [configuration](https://rspec.info/features/6-0/rspec-rails/controller-specs/render-views) renders the views in a controller test.
+
 ## Contributing to Jbuilder
 
 Jbuilder is the work of many contributors. You're encouraged to submit pull requests, propose
 features and discuss issues.