Circular progress bar using CoffeeScript, AngularJS and D3JS
References
CoffeeScript http://coffeescript.org/
Angular.js https://docs.angularjs.org/api http://fastandfluid.com/publicdownloads/AngularJSIn60MinutesIsh_DanWahlin_May2013.pdf
D3.js https://github.com/mbostock/d3/wiki