Foto não aparece | AngularJS: crie webapps poderosas | Alura

Erro

Uncaught Error: [$injector:nomod] http://errors.angularjs.org/1.3.15/$injector/nomod?p0=alurapic
    at angular.js:38
    at angular.js:1774
    at a (angular.js:1698)
    at Object.module (angular.js:1772)
    at fotos-controller.js:2
(anonymous) @ angular.js:38
(anonymous) @ angular.js:1774
a @ angular.js:1698
(anonymous) @ angular.js:1772
(anonymous) @ fotos-controller.js:2
angular.js:38 Uncaught Error: [$injector:modulerr] http://errors.angularjs.org/1.3.15/$injector/modulerr?p0=alurapic&p1=Error%3A%20%5B%24injector%3Anomod%5D%20http%3A%2F%2Ferrors.angularjs.org%2F1.3.15%2F%24injector%2Fnomod%3Fp0%3Dalurapic%0A%20%20%20%20at%20http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A6%3A417%0A%20%20%20%20at%20http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A21%3A412%0A%20%20%20%20at%20a%20(http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A21%3A53)%0A%20%20%20%20at%20http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A21%3A296%0A%20%20%20%20at%20http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A35%3A46%0A%20%20%20%20at%20r%20(http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A7%3A302)%0A%20%20%20%20at%20g%20(http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A34%3A399)%0A%20%20%20%20at%20ab%20(http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A38%3A135)%0A%20%20%20%20at%20d%20(http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A17%3A381)%0A%20%20%20%20at%20uc%20(http%3A%2F%2Flocalhost%3A3000%2Fjs%2Flib%2Fangular.min.js%3A18%3A179)
    at angular.js:38
    at angular.js:4138
    at r (angular.js:323)
    at g (angular.js:4099)
    at ab (angular.js:4025)
    at d (angular.js:1452)
    at uc (angular.js:1473)
    at Jd (angular.js:1367)
    at angular.js:26304
    at HTMLDocument.a (angular.js:2762)
(anonymous) @ angular.js:38
(anonymous) @ angular.js:4138
r @ angular.js:323
g @ angular.js:4099
ab @ angular.js:4025
d @ angular.js:1452
uc @ angular.js:1473
Jd @ angular.js:1367
(anonymous) @ angular.js:26304
a @ angular.js:2762
c @ angular.js:3032

HTML

<!-- public/index.html -->
<html lang="pt-br" ng-app="alurapic">
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width">
        <title>Alura PIC</title>
        <link rel="stylesheet" href="/css/bootstrap.min.css">
        <link rel="stylesheet" href="/css/bootstrap-theme.min.css">
        <script src="js/lib/angular.min.js"></script>
        <script src="js/main.js"></script>
        <script src="js/controllers/fotos-controller.js"></script>
    </head>
    <body ng-controller="FotosController">
        <div class="container">
            <h1 class="text-center">Alurapic</h1>
            <img class="img-responsive center-block" src="{{foto.url}}" alt="{{foto.titulo}}">
        </div><!-- fim container -->
    </body>
</html>

MAIN

angular.module('alurapic', []);

CONTROLLER

// public/js/controllers/fotos-controller.js
angular.module('alurapic').controller('FotosController', function($scope) {

    $scope.foto = {
        titulo : 'Leão',
        url : 'http://www.fundosanimais.com/Minis/leoes.jpg'
    };

});