misc: move runme demo in block quote about v2 (#2852)

README.md

@@ -17,6 +17,8 @@
 </p>
 
 > **We are working hard on Docusaurus v2. If you are new to Docusaurus, try using the new version instead of v1. See the [Docusaurus v2 website](https://v2.docusaurus.io/) for more details.**
+> 
+> You can see the clean live demo with classic theme by clicking this badge [![Runme](https://runme.io/static/button.svg)](https://runme.io/run?app_id=0dd80306-47bb-4e80-95dc-dc95eb05d3fd). 
 
 ## Introduction
 
@@ -32,10 +34,6 @@ Docusaurus is available as the [`docusaurus` package](https://www.npmjs.com/pack
 
 We have also released the [`docusaurus-init` package](https://www.npmjs.com/package/docusaurus-init) to make [getting started](https://docusaurus.io/docs/en/installation/) with Docusaurus even easier.
 
-## Demo
-
-[![Runme](https://runme.io/static/button.svg)](https://runme.io/run?app_id=0dd80306-47bb-4e80-95dc-dc95eb05d3fd)- Click on button to see quick-start demo
-
 ## Contributing
 
 We've released Docusaurus because it helps us better scale and supports the many OSS projects at Facebook. We hope that other organizations can benefit from the project. We are thankful for any contributions from the community.