fix flaglist

README.md

@@ -94,3 +94,13 @@ Then visit [http://localhost:8787/](http://localhost:8787/)
 If you don't already have an account, then [create a Cloudflare account here](https://dash.cloudflare.com/sign-up/pages). Next go to your dashboard and follow the [Cloudflare Pages deployment guide](https://developers.cloudflare.com/pages/framework-guides/deploy-anything/).
 
 Within the projects "Settings" for "Build and deployments", the "Build command" should be `npm run build`, and the "Build output directory" should be set to `dist`.
+
+## Express Server
+
+This app has a minimal [Express server](https://expressjs.com/) implementation. After running a full build, you can preview the build using the command:
+
+```
+npm run serve
+```
+
+Then visit [http://localhost:8080/](http://localhost:8080/)