OXID Bootstrap Responsive: Grunt csswring

csswring.js

module.exports = function (grunt, options) {
    return {
        options: {
            report: "gzip",
            removeAllComments: true,
            preserveHacks: true
        },
        vendor: {
            src: [
                './out/azure/src/css/libs/jscrollpane.css',
                './bower_components/bootstrap/dist/css/bootstrap.css',
                './bower_components/fontawesome/css/font-awesome.css',
                './out/meinshop/src/css/prettyPhoto.css'
            ],
            dest: './out/meinshop/src/css/vendor.css'
        }
    };
};