Remove serve, it's no longer needed.

serve.js

@@ -1,22 +0,0 @@
-const http = require('http'), fs = require('fs'), path = require('path');
-
-http.createServer((req, res) => {
-  const file = '.' + (req.url === '/' ? '/index.html' : req.url);
-
-  fs.readFile(file, (err, data) => {
-    if (err) {
-      res.writeHead(404);
-      return res.end(String(err));
-    }
-
-    const ext = path.extname(file);
-    const contentType = {
-      '.html': 'text/html',
-      '.js': 'text/javascript',
-      '.css': 'text/css'
-    }[ext] || 'text/plain';
-
-    res.writeHead(200, { 'Content-Type': contentType });
-    res.end(data);
-  });
-}).listen(8000, () => console.log('Serving on port 8000'));