backbone-sync-override.js

// The following could have been replaced by setting `Backbone.emulateHTTP = true;`

Backbone._sync = Backbone.sync;
Backbone.sync = function( method, model, options ) {
    var beforeSend = options.beforeSend;
    options = options || {};
    options.success = function(){
        options.Count = xhr.getResponseHeader("Count")
    }
    return Backbone._sync( method, model, options );
};