Update README.md

added the Play demo dashboards

README.md

@@ -12,6 +12,9 @@ Watch this video to learn more about setting up the Grafana GitHub data source p
 
 [![GitHub data source plugin | Visualize GitHub using Grafana | Tutorial](https://img.youtube.com/vi/DW693S3cO48/hq720.jpg)](https://youtu.be/DW693S3cO48 "Grafana GitHub data source plugin")
 
+### Give it a try using Grafana Play
+With Grafana Play, you can explore and see how it works, learning from practical examples to accelerate your development. This feature can be seen on [GitHub data source plugin demo](https://play.grafana.org/d/cdgx261sa1ypsa/3-single-repo-with-override-examples).
+
 ## GitHub API V4 (GraphQL)
 
 This data source uses the [`githubv4` package](https://github.com/shurcooL/githubv4), which is under active development.