Custom element registration

assets/pages/test-page.rml

@@ -4,4 +4,10 @@
     <button id="test-btn">Button clicked: {{counter}} times</button>
 
     <p>If you have a .rcss file with the same name as the page in the pages directory, it will be loaded at runtime so you can add custom styling to a page, which is why the header is red on this page only.</p>
+
+    <p>This next section demonstates two things, the custom <code>"healthbar"</code> rml element, and scoped lua with the damage and heal buttons</p>
+
+    <healthbar id="hp-bar" current="100" max="100"></healthbar>
+    <button onclick="TestPage.Damage(event)">Damage</button>
+    <button onclick="TestPage.Heal(event)">Heal</button>
 </div>