Download the production version or the development version.
If you use bower, you can install this via: bower install angular-dc
30 second look:
<script src="angular.js"></script>
<script src="dist/angular-dc.min.js"></script>
<script>
// some angularjs controller code...
</script>
<!--Setup a simple pie chart. DC.js options are exposed as html attributes-->
<div dc-chart="pieChart" dc-width="180" dc-height="180" dc-radius="80" dc-dimension="gainOrLoss" dc-group="gainOrLossGroup" class="dc-chart"></div>