chore: update README.md

Author: stafyniaksacha

README.md

@@ -12,6 +12,9 @@
   by <a href="https://cssninja.io" title="Our official website"><strong>cssninja.io</strong></a>
 </p>
 
+> [!IMPORTANT]
+> Looking for Shuriken UI v4, with tailwind v4 support? Check https://github.com/shuriken-ui/shuriken-ui
+
 ---
 
 ## Shuriken UI - Nuxt