Update README.md

Author: johncmanuel

README.md

@@ -3,6 +3,12 @@
 ## Update (5-7-25)
 The Colyseus server will be taken down as of today!
 
+## Blog Post + Demo
+
+Summarizes the project and covers a quick demo at the end!
+
+[https://registers.johncarlomanuel.com/code-red-connecting-remote-teams-with-play/](https://registers.johncarlomanuel.com/code-red-connecting-remote-teams-with-play/)
+
 ## Setup
 
 1. install packages in root, `/client` and `/server` directories with `npm setup` at the root `package.json`