Fix checkbox to avoid problems with jQuery versions < 1.9. Look this http://jquery.com/upgrade-guide/1.9/#checkbox-radio-state-in-a-trigger-ed-click-event for more details
update jquery and qunit vesrion, get qunit from CDN
add Grunt task. To use it: 1) npm install -g grunt-cli; 2) Change to the project's root directory; 3) npm install; 4) grunt