add piwik installation

www/analytics/plugins/Feedback/angularjs/ratefeature/ratefeature-model.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
+ */
+
+angular.module('piwikApp').factory('rateFeatureModel', function (piwikApi) {
+
+    var model = {};
+
+    model.sendFeedbackForFeature = function (featureName, like, message) {
+        return piwikApi.fetch({
+            method: 'Feedback.sendFeedbackForFeature',
+            featureName: featureName,
+            like: like ? '1' : '0',
+            message: message + ''
+        });
+    };
+
+    return model;
+});