server
    {
        listen 80;
        server_name cdn.cjango.com;
        root /home/www/cjango;
        location / {
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Headers X-Requested-With;
            add_header Access-Control-Allow-Methods GET;
            expires      1d;
        }
        access_log  off;
    }