Overriding sync to make this a read-only jsonp app

gistfile1.js

    // Overriding sync to make this a read-only jsonp app
    Backbone.sync = function(method, model, success, error) {

        $.ajax({
            url: getUrl(model),
            type: 'GET',
            // jsonp is read-only
            //contentType: 'application/json',
            data: null,
            // nothing to send
            dataType: 'jsonp',
            processData: false,
            success: success,
            error: error
        });

    };