Add CachedHelloWorld.js example

examples/CachedHelloWorld.js

@@ -0,0 +1,18 @@
+/* Minimal SSL/non-SSL example using 5 seconds of HTTP cache */
+
+const uWS = require('../dist/uws.js');
+const port = 9001;
+
+const app = uWS./*SSL*/App({
+  key_file_name: 'misc/key.pem',
+  cert_file_name: 'misc/cert.pem',
+  passphrase: '1234'
+}).get('/*', (res, req) => {
+  res.end('Hello World!');
+}, 5).listen(port, (token) => {
+  if (token) {
+    console.log('Listening to port ' + port);
+  } else {
+    console.log('Failed to listen to port ' + port);
+  }
+});