[FEATURE] 🚚 Rename demo files

Author: pixelbrackets

README.md

@@ -54,6 +54,10 @@ https://gitlab.com/pixelbrackets/html5-mini-template/
 
 Mirror https://github.com/pixelbrackets/html5-mini-template
 
+## Demo
+
+⌨️ [`php tests/demo.php`](./tests/demo.php).
+
 ## Usage
 
 1. Wrap a message into a HTML5 document, return to a PSR-7 implementation

tests/example-page.php renamed to tests/demo-example-page.php

@@ -0,0 +1,3 @@
+<?php
+
+require __DIR__ . '/demo-status-page.php';