add piwik installation

www/analytics/plugins/Feedback/angularjs/ratefeature/ratefeature-directive.js

@@ -0,0 +1,22 @@
+/*!
+ * Piwik - Web Analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+/**
+ * Usage:
+ * <div piwik-rate-feature title="My Feature Name">
+ */
+angular.module('piwikApp').directive('piwikRateFeature', function($document, piwik, $filter){
+
+    return {
+        restrict: 'A',
+        scope: {
+            title: '@'
+        },
+        templateUrl: 'plugins/Feedback/angularjs/ratefeature/ratefeature.html?cb=' + piwik.cacheBuster,
+        controller: 'RateFeatureController'
+    };
+});