Moved admin files to their own directory, trying to get a comprehensive structure in place

admin/class-install.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace PluginNamespace;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+class Install {
+
+	private static $db_updates = array(
+		'1.1.0' => array(
+			'dh_update_110_options',
+		),
+	);
+
+}