Add page that auto-refreshes every five minutes

For use in Reading School newsroom

_site/auto-refresh.html

@@ -0,0 +1,18 @@
+<iframe id="iframe" src="/"></iframe>
+
+<script>
+window.setInterval(function() {
+            document.getElementById('iframe').contentWindow.location.reload();
+        }, 300000);
+</script>
+
+<style>
+    html, body, iframe {
+        height: 100%;
+        width: 100%;
+        margin: 0;
+        padding: 0;
+        border: none;
+    }
+</style>
+