Composer vendors symfony

http://stackoverflow.com/questions/11483137/it-is-possible-to-access-vendor-files-from-within-a-view-in-symfony-2-0

{% stylesheets '../vendor/twitter/bootstrap/bootstrap/css/bootstrap.min.css' %}
    <link rel="stylesheet" href="{{ asset_url }}" />
{% endstylesheets %}

{% javascripts '../vendor/twitter/bootstrap/bootstrap/js/bootstrap.min.js' %}
    <script src="{{ asset_url }}" type="text/javascript"></script>
{% endjavascripts %}