An example of the overrides needed to use camel case routes and json.

Ember Data Camelcase serializer

App.Serializer = DS.RESTSerializer.extend({
    keyForAttributeName: function(type, name) {
        return name;
    },

    keyForBelongsTo: function(type, name) {
        var key = this.keyForAttributeName(type, name);

        if (this.embeddedType(type, name)) {
            return key;
        }

        return key + "Id";
    },

    keyForHasMany: function(type, name) {
        var key = this.keyForAttributeName(type, name);

        if (this.embeddedType(type, name)) {
            return key;
        }

        return this.singularize(key) + "Ids";
    },

    keyForPolymorphicType: function(key) {
        return key.replace(/Id$/, 'Type');
    },

    rootForType: function(type) {

        var typeString = type.toString();

        Ember.assert("Your model must not be anonymous. It was " + type, typeString.charAt(0) !== '(');

        // use the last part of the name as the URL
        var parts = typeString.split(".");
        var name = parts[parts.length - 1];
        return name.charAt(0).toLowerCase() + name.slice(1);
    }
});