update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/VisitFrequency/Reports/Get.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * 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\VisitFrequency\Reports;
+
+use Piwik\Piwik;
+use Piwik\Plugins\CoreHome\Columns\Metrics\ActionsPerVisit;
+use Piwik\Plugins\CoreHome\Columns\Metrics\AverageTimeOnSite;
+use Piwik\Plugins\CoreHome\Columns\Metrics\BounceRate;
+use Piwik\Plugins\VisitFrequency\Columns\Metrics\ReturningMetric;
+
+class Get extends \Piwik\Plugin\Report
+{
+    protected function init()
+    {
+        parent::init();
+        $this->category      = 'General_Visitors';
+        $this->name          = Piwik::translate('VisitFrequency_ColumnReturningVisits');
+        $this->documentation = ''; // TODO
+        $this->processedMetrics = array(
+            new ReturningMetric(new AverageTimeOnSite()),
+            new ReturningMetric(new ActionsPerVisit()),
+            new ReturningMetric(new BounceRate())
+        );
+        $this->metrics       = array(
+            'nb_visits_returning',
+            'nb_actions_returning',
+            'nb_uniq_visitors_returning',
+            'nb_users_returning',
+            'max_actions_returning'
+        );
+        $this->order = 40;
+    }
+}