"require": {
    ...
    "djerrah/file-uploader-bundle" : "dev"
},
"repositories": [{
    {
        "type" : "vcs",
        "url" : "https://github.com/djerrah/FileUploaderBundle.git"
    }
}],

    $bundles = array(
        /* ... */
        new Djerrah\FileUploaderBundle\DjerrahFileUploaderBundle(),
        new Stof\DoctrineExtensionsBundle\StofDoctrineExtensionsBundle(),
    );

orm:

    default:
    
        timestampable: true