delete handler

public/js/app.js

@@ -33,7 +33,14 @@ var render = function(){
 			.attr('cx', function(datum, index){
 				return convertXDataPointToVisualPoint(new Date(datum.date));
 			});
+		d3.selectAll('circle').on('click', function(datum, index){
+			//send delete
+			d3.request('/runs/'+datum.id)
+				.header("Content-Type", "application/json") //we're sending data
+				.send('DELETE', render); //send a DELETE request
+		});
 	});
+
 };
 
 render();