Add WordPress Playground link in README.md

Author: candy02058912

README.md

@@ -4,6 +4,8 @@ _Define custom post types & fields in the Block Editor._
 
 WordPress.com’s experimental Create Content Model plugin transforms the way custom post types and custom fields are created and managed in WordPress by making use of the latest core features to bring content modeling into the Block Editor.  ​​Additionally, the created data model and data entry UI can be exported as a standalone, maintenance-free plugin.
 
+[![Try in WordPress Playground](https://img.shields.io/badge/Try%20in%20WordPress%20Playground-blue?style=for-the-badge)](https://playground.wordpress.net/?blueprint-url=https://raw.githubusercontent.com/Automattic/create-content-model/trunk/blueprint.json)
+
 [[video]]
 
 ## About