Add Vercel to list of adapters (#571)

* Add Vercel to list of adapters

* Remove duplicate list of adapters

* Add more installation details. People keeping getting broken versions by not installing next

* link to config section

* whoops

Co-authored-by: Rich Harris <[email protected]>

Author: benmccann

packages/create-svelte/template/README.md

@@ -29,11 +29,14 @@ npm run dev -- --open
 
 ## Building
 
-Svelte apps are built with _adapters_, which optimise your project for deployment to different environments, like [Begin](https://begin.com), [Netlify](https://www.netlify.com), [Vercel](https://vercel.com) and so on. (You can also create your own adapter — instructions TODO.)
+Svelte apps are built with _adapters_, which optimise your project for deployment to different environments.
 
-By default, `npm run build` will generate a Node app that you can run with `node build`. To use a different adapter, install it and update your `svelte.config.cjs` accordingly. The following official adapters are available:
+By default, `npm run build` will generate a Node app that you can run with `node build`. To use a different adapter, add it to the `devDependencies` in `package.json` making sure to specify the version as `next` and update your `svelte.config.cjs` to [specify your chosen adapter](https://kit.svelte.dev/docs#configuration-adapter). The following official adapters are available:
 
 - [@sveltejs/adapter-node](https://github.com/sveltejs/kit/tree/master/packages/adapter-node)
 - [@sveltejs/adapter-static](https://github.com/sveltejs/kit/tree/master/packages/adapter-static)
 - [@sveltejs/adapter-netlify](https://github.com/sveltejs/kit/tree/master/packages/adapter-netlify)
+- [@sveltejs/adapter-vercel](https://github.com/sveltejs/kit/tree/master/packages/adapter-vercel)
 - ...more soon
+
+[See the adapter documentation for more detail](https://kit.svelte.dev/docs#adapters)