Updated readme with gitpod snapshot

Author: Silvester

README.md

@@ -3,3 +3,8 @@ A nuxt & buefy playground based on gitpod
 
 ## Usage
 Just add 'gitpod.io/#' to the url: [https://gitpod.io/#github.com/silvester-pari/nuxt-gitpod/](https://gitpod.io/#github.com/silvester-pari/nuxt-gitpod/)
+
+## Workspace Snapshot
+To open the workspace from a saved snapshot with preview enabled, click the following button:
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io#snapshot/5215f620-cdd8-4181-b395-00c6e6e3fd24)