angular.module('thumbsCheckApp')
  // inject $firebaseObject
  .controller('MainCtrl', function($scope, $firebaseObject, user, Auth, Ref) {
    // https://www.firebase.com/docs/web/libraries/angular/quickstart.html 
    // create a new firebase connection as below;
    var ref = new Firebase('https://waffleup.firebaseio.com');
    $scope.input = '';

    $scope.logout = function() { Auth.$unauth(); };
  });

angular.module('thumbsCheckApp')
  // inject $firebaseObject
  .controller('MainCtrl', function($scope, $firebaseObject, user, Auth, Ref) {
    // https://www.firebase.com/docs/web/libraries/angular/quickstart.html 
    // create a new firebase connection as below;
    var ref = new Firebase('https://waffleup.firebaseio.com');
    $scope.input = '';

    $scope.logout = function() {
      Auth.$unauth();
    };

  });

reformat - styling