adding minimal demo

Author: jkyberneees

demos/minimal.js

@@ -0,0 +1,13 @@
+/* global Response */
+const http = require('../index')
+
+const { router } = http({})
+
+router.get('/hi', async (req) => {
+  return new Response('Hello World!')
+})
+
+module.exports = {
+  port: 3000,
+  fetch: (request) => router.lookup(request)
+}