Adjust ember-data url to add .json

app.js

http://stackoverflow.com/questions/14828478/ember-js-ember-data-restadapter-fail-to-load-json
// TravelClient.CUSTOMAdapter = DS.RESTAdapter.extend({
    bulkCommit: false,
    url: "http://remote_server_address",
    buildURL: function(record, suffix) {
        var s = this._super(record, suffix);
        return s + ".json";
    }
})