Simple grunt-contrib-connect options to modify cross-domain policy.

gistfile1.js

grunt.config(['connect'], {
    options: {
    port: 9000,
        hostname: '*',
        keepalive: true,
        middleware: function (connect) {
            return [
                function (request, response, next) {
                    response.setHeader('Access-Control-Allow-Origin', '*');
                    return next();
                },
            connect.static(require('path').resolve('.'))
            ];
        }    
    }
});