add vercel logo

Author: mikebarkmin

README.md

@@ -65,3 +65,7 @@ Bitflow is maintained by [OpenPatch](https://openpatch.org), an organization for
 Special thanks to the [University of Duisburg-Essen](https://uni-due.de) and the [Chair of Computer Science Education](https://www.ddi.wiwi.uni-due.de/) for supporting the development of this library.
 
 Another huge shoutout to [webkid](https://webkid.io/) for developing and maintaining [React Flow](https://github.com/wbkd/react-flow/). This library is the core of Bitflow.
+
+We also like to thank [Vercel](https://vercel.com) for hosting our documentation.
+
+[![Vercel](https://www.datocms-assets.com/31049/1618983297-powered-by-vercel.svg)](https://vercel.com?utm_source=openpatch&utm_campaign=oss)

website/public/static/powered-by-vercel-black.svg

@@ -1,4 +1,6 @@
-import { Footer, Nav } from "@openpatch/patches";
+import { Box, Footer, Nav } from "@openpatch/patches";
+import Link from "next/link";
+import Image from "next/image";
 import { FC, Fragment, PropsWithChildren } from "react";
 import { Logo } from "./Logo";
 
@@ -29,6 +31,17 @@ export const NavLayout: FC<PropsWithChildren<NavLayoutProps>> = ({
         ]}
       ></Nav>
       {children}
+      <Box mb="medium" textAlign="center">
+        <Link href="https://vercel.com?utm_source=openpatch&utm_campaign=oss">
+          <a>
+            <Image
+              src="/static/powered-by-vercel-black.svg"
+              width={212}
+              height={44}
+            />
+          </a>
+        </Link>
+      </Box>
       <Footer
         links={[
           {