add piwik installation

www/analytics/plugins/SegmentEditor/Controller.php

@@ -0,0 +1,20 @@
+<?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\SegmentEditor;
+
+/**
+ */
+class Controller extends \Piwik\Plugin\Controller
+{
+    public function getSelector()
+    {
+        $selector = new SegmentSelectorControl();
+        return $selector->render();
+    }
+}