Update README.md

Author: marveluck

README.md

@@ -4,6 +4,14 @@ MDB is a collection of free Bootstrap templates, themes, design tools & resource
 
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+#### This content is for the previous 4th version of Bootstrap
+
+#### Newer version is available for Bootstrap 5. We recommend migrating to the latest version of our product
+
+### [>> Get 700+ material UI components, free hosting, super simple 1 minute installation & much more](https://mdbootstrap.com/docs/b5/vue/)
+
+---
+
 # Get started
 
 ### [>> Get Started in 1 minute](https://mdbootstrap.com/docs/vue/getting-started/installation/)