update Piwik to version 2.16 (fixes #91)

www/analytics/core/Measurable/Measurable.php

@@ -0,0 +1,32 @@
+<?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\Measurable;
+
+use Exception;
+use Piwik\Site;
+
+/**
+ * Provides access to individual measurables.
+ */
+class Measurable extends Site
+{
+
+    public function getSettingValue($name)
+    {
+        $settings = new MeasurableSettings($this->id, $this->getType());
+        $setting  = $settings->getSetting($name);
+
+        if (!empty($setting)) {
+            return $setting->getValue(); // Calling `getValue` makes sure we respect read permission of this setting
+        }
+
+        throw new Exception(sprintf('Setting %s does not exist', $name));
+    }
+}