AngularJS unstable template

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {
  $scope.names = ["John", "Jack", "Anna", "Ray", "Bob"];
});

<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <script src="http://code.angularjs.org/1.1.5/angular.min.js"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <ul>
      <li ng-repeat="name in names">{{ name }}</li>
    </ul>
  </body>

</html>