Add cms query on launching URL

Author: wutali

README.md

@@ -13,7 +13,7 @@ Next.js blogging template for Netlify has already implemented these standard fea
 
 Deploy on your environment by clicking here:
 
-[![Deploy to Netlify](https://www.netlify.com/img/deploy/button.svg)](https://app.netlify.com/start/deploy?repository=https://github.com/wutali/nextjs-netlify-blog-template)
+[![Deploy to Netlify](https://www.netlify.com/img/deploy/button.svg)](https://app.netlify.com/start/deploy?repository=https://github.com/wutali/nextjs-netlify-blog-template&stack=cms)
 
 Or access the following demo site: