added note about the out_of_range exta to the README

README.md

@@ -48,7 +48,7 @@ _The [IPS/Kb ratio](http://ddnexus.github.io/pagination-comparison/gems.html#eff
 
 - It works with collections/scopes that already used `limit` and `offset` _(see [how...](https://ddnexus.github.io/pagy/how-to#paginate-a-pre-offsetted-and-pre-limited-collection))_
 - It works with helpers or templates _(see [more...](https://ddnexus.github.io/pagy/how-to#using-templates))_
-- It raises real `Pagy::OutOfRangeError` exceptions that you can rescue from _(see [how...](https://ddnexus.github.io/pagy/how-to#handling-pagyoutofrangeerror-exception))_
+- It raises real `Pagy::OutOfRangeError` exceptions that you can rescue from _(see [how...](https://ddnexus.github.io/pagy/how-to#handling-pagyoutofrangeerror-exception))_ or use the [out_of_range extra](http://ddnexus.github.io/pagy/extras/out_of_range) for a few ready to use common behaviors
 - It does not impose any difficult-to-override logic or output _(see [why...](https://ddnexus.github.io/pagy/index#really-easy-to-customize))_
 
 ### Easy to use