Add some example code

.gitignore

@@ -0,0 +1 @@
+node_modules/

index.js

@@ -1 +1 @@
-include("./webserver.js")
+require("./webserver.js");

package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "express": "^4.18.1"
+  }
+}

webserver.js

@@ -0,0 +1,11 @@
+const express = require('express')
+const app = express()
+const port = 3000
+
+app.get('/', (req, res) => {
+  res.send('Hello World!')
+})
+
+app.listen(port, () => {
+  console.log(`Example app listening on port ${port}`)
+})