chore(readme): adds hint for firebase shutdown

README.md

@@ -3,7 +3,12 @@
 [![npm version](https://badge.fury.io/js/%40pantrist%2Fcapacitor-firebase-dynamic-links.svg)](https://badge.fury.io/js/%40pantrist%2Fcapacitor-firebase-dynamic-links)
 ![npm downloads per month](https://img.shields.io/npm/dm/@pantrist/capacitor-firebase-dynamic-links)
 
-Capacitor plugin for [Firebase Dynamic Links](https://firebase.google.com/docs/dynamic-links)
+Capacitor plugin for [Firebase Dynamic Links](https://firebase.google.com/docs/dynamic-links).
+
+# ⚠️ *Firebase shutdown at the 25th August 2025* ⚠️
+
+Firebase, and also this plugin, will work until that day. But it won't be working anymore after that.
+If you plan to implement something similar, you should search for alternatives. I went with [capacitor-branch-deep-links](https://github.com/BranchMetrics/capacitor-branch-deep-links).
 
 ## Configuration