added pagy-cursor link in README

README.md

@@ -109,6 +109,7 @@ Use the official extras, or write your own in just a few lines. Extras add speci
 ### Backend Extras
 
 - [arel](http://ddnexus.github.io/pagy/extras/arel): Better performance of grouped ActiveRecord collections
+Paginate arrays efficiently, avoiding expensive array-wrapping and without overriding
 - [array](http://ddnexus.github.io/pagy/extras/array): Paginate arrays efficiently, avoiding expensive array-wrapping and without overriding
 - [countless](http://ddnexus.github.io/pagy/extras/countless): Paginate without the need of any count, saving one query per rendering
 - [elasticsearch_rails](http://ddnexus.github.io/pagy/extras/elasticsearch_rails): Paginate `ElasticsearchRails` response objects
@@ -142,6 +143,10 @@ Besides the classic pagination offered by the `pagy_nav` helpers, you can use a
 
 - [pagy_combo_nav_js](http://ddnexus.github.io/pagy/extras/navs#javascript-combo-navs): The fastest and lightest alternative UI _(48x faster, 48x lighter and 2,270x more efficient than Kaminari)_ that combines navigation and pagination info in a single compact element:<br>![bootstrap_combo_nav_js](docs/assets/images/bootstrap_combo_nav_js-w.png)
 
+### Related Projects
+
+- [pagy-cursor](https://github.com/Uysim/pagy-cursor) An early stage proget that implements cursor pagination for AR
+
 ## Resources
 
 ### GoRails Screencast