Knockout View Model Method Call without deferreds

gistfile1.js

var viewModel = function() {

    var self = this;
    self.description = ko.observable('hello');

    self.get = function(words) {
        $.ajax({
            url: "/echo/json",
            dataType: "json",
            type: "POST",
            data: {
                "text": words
            },
            success: function(data) {
                self.description(words);
            },
            error: function(data) {

            }

        });
    };

};

$(function() {

    var instance = new viewModel();
    ko.applyBindings(instance);

    instance.get('something');

});​