Breeze is a basic web-app that loads and displays the current temperature for practically any place in the world. Checkout my blog for a full two-part tutorial!
Tutorial part-1: http://ivanhayes.com/blog/creating-a-web-app-with-grunt-part-1/
Tutorial part-2: http://ivanhayes.com/blog/creating-a-web-app-with-grunt-part-2/