Adding main controller for the sample application

public/scripts/controllers/appController.js

@@ -0,0 +1,13 @@
+'use strict';
+
+restApp.controller('appController', function($scope, $location) {
+    $scope.siteTitle = 'REST App';
+
+    $scope.$on('$stateChangeSuccess', function(event, toState) {
+        $scope.pageTitle = toState.data.pageTitle;
+    });
+
+    $scope.isActive = function(viewLocation) {
+        return viewLocation === $location.path();
+    };
+});