text: (function(){
  
    angular.module('fooApp', ['ng-cache'])
      .controller('mainCtrl', function($cache, $scope){
        $scope.data = $data = {
          visitor: ''
        };
        $data.visitor = $cache.visitor;
          // # instantiate to
        $scope.update = function() {
          $cache.visitor = $data.visitor;
        }; // # update to on invoke
      });
  
  })();
  