docs: improve readme

Author: bayuagpr-xaltius

README.md

@@ -4,6 +4,8 @@
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Node.js Version](https://img.shields.io/node/v/gitloom-diff.svg)](https://nodejs.org)
 
+> ⚠️ **Early Stage Project**: GitLoom Diff is currently in active development and not yet production-ready. Expect frequent breaking changes and major updates as we evolve the tool. Use with caution in production environments.
+
 **Stop squinting at those git provider diff views.** Generate beautiful, searchable, IDE-friendly git diffs in markdown format.
 
 ![Demo GIF showing diff generation]() <!-- Add demo gif -->