update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/ExamplePlugin/Controller.php

@@ -1,27 +1,28 @@
 <?php
 /**
- * Piwik - Open source web analytics
+ * Piwik - free/libre analytics platform
  *
  * @link http://piwik.org
  * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
- *
  */
+
 namespace Piwik\Plugins\ExamplePlugin;
 
 use Piwik\View;
 
 /**
- *
+ * A controller let's you for example create a page that can be added to a menu. For more information read our guide
+ * http://developer.piwik.org/guides/mvc-in-piwik or have a look at the our API references for controller and view:
+ * http://developer.piwik.org/api-reference/Piwik/Plugin/Controller and
+ * http://developer.piwik.org/api-reference/Piwik/View
  */
 class Controller extends \Piwik\Plugin\Controller
 {
-
     public function index()
     {
-        $view = new View('@ExamplePlugin/index.twig');
-        $this->setBasicVariablesView($view);
-        $view->answerToLife = '42';
-
-        return $view->render();
+        // Render the Twig template templates/index.twig and assign the view variable answerToLife to the view.
+        return $this->renderTemplate('index', array(
+            'answerToLife' => 42
+        ));
     }
 }