Add Vercel deployment button

README.md

@@ -1,6 +1,6 @@
 # Academic project page template
 
-[![Deploy to Netlify](https://www.netlify.com/img/deploy/button.svg)](https://app.netlify.com/start/deploy?repository=https://github.com/romanhauksson/academic-project-astro-template)
+[![Deploy to Netlify](https://www.netlify.com/img/deploy/button.svg)](https://app.netlify.com/start/deploy?repository=https://github.com/romanhauksson/academic-project-astro-template) [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2FRomanHauksson%2Facademic-project-astro-template)
 
 This is a template you can use to create a simple project page for your research paper. See a live demo [here](https://research-template.roman.technology).