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

admin/nmsp-update-functions.php

@@ -0,0 +1,18 @@
+<?php
+
+if ( ! defined( 'ABSPATH' ) ) {
+    exit;
+}
+
+/**
+ * Update something in the database
+ *
+ * @since 1.1.0
+ *
+ * @return void
+ */
+function dh_update_110_options() {
+	global $wpdb;
+
+	// do the thing here to update the database
+}