add icons for Character groups

www/analytics/plugins/ExampleAPI/ExampleAPI.php

@@ -0,0 +1,18 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Plugins\ExampleAPI;
+
+/**
+ * This plugin only provides an API.php file, so we leave the plugin class empty
+ *
+ */
+class ExampleAPI extends \Piwik\Plugin
+{
+
+}