add plugin header to ignore 404 snippet

Author: dannyvankooten

code-snippets/disable-tracking-for-404s.php

@@ -1,4 +1,7 @@
 <?php
+/**
+ * Plugin Name: Koko Analytics: Ignore 404 Pages
+ */
 
 add_filter('koko_analytics_load_tracking_script', function ($load) {
     return $load && ! is_404();