docs: add note about universal vue 2 and 3 support

Author: renatodeleao

README.md

@@ -1,5 +1,6 @@
 ## Why another modal/dialog plugin
 
+- ✅ Universal: works in `vue@2` and `vue@3` 🚧
 - ✅ Renderless/headless: no assumptions about styles or markup. You have full control.
 - ✅ Accessibility first — Focus trap<sup>[1]</sup> + keyboard navigation + aria-attributes
 - ✅ Fully controlled component

docs/guide/README.md

@@ -3,6 +3,7 @@ title: Introduction
 ---
 ## Why another modal/dialog plugin
 
+- ✅ Universal: works in `vue@2` and `vue@3` 🚧
 - ✅ Renderless/headless: no assumptions about styles or markup. You have full control.
 - ✅ Accessibility first — Focus trap<sup>[1]</sup> keyboard navigation + aria-attributes
 - ✅ Fully controlled component