Update README [ci skip]

Author: n-rodriguez

README.md

@@ -665,10 +665,13 @@ $ bundle install
 ```
 
 That's all :) ([Automatically prefer Yajl or JSON backend over Yaml, if available](https://github.com/rails/rails/commit/63bb955a99eb46e257655c93dd64e86ebbf05651))
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 ## Tutorial
 
 You'll find a sample project [here](https://github.com/ajahongir/ajax-datatables-rails-v-0-4-0-how-to). Its real world example.
 
+Filtering by JSONB column values : [#277](https://github.com/jbox-web/ajax-datatables-rails/issues/277)
+
 ## Contributing
 
 1. Fork it