Merge remote branch 'lowerkey/master'

* lowerkey/master:
  Removed not yet implemented at the bottom of readme
  Using nodeSelected parameter.
  Added nodeSelected parameter, I think.
  Update README.mkdn

README.mkdn

@@ -93,3 +93,9 @@ Acknowledgements
 
 Thanks to [Lachlan Donald](http://github.com/lox) for his helpful suggestions and
 feedback.
+
+Additions
+----
+
+This forked version adds a callback (called `nodeSelected` in the jquery
+initializer. This callback is passed the node object.

demo.html

@@ -30,7 +30,10 @@ graph.newEdge(bianca, monty, {color: '#EB6841'});
 
 jQuery(function(){
 	var springy = jQuery('#springydemo').springy({
-		graph: graph
+		graph: graph,
+		nodeSelected: function(node){
+			console.log('Node selected: ' + JSON.stringify(node.data));
+		}
 	});
 });
 </script>

springyui.js

@@ -31,6 +31,8 @@ jQuery.fn.springy = function(params) {
 	var stiffness = params.stiffness || 400.0;
 	var repulsion = params.repulsion || 400.0;
 	var damping = params.damping || 0.5;
+	
+	var nodeSelected = params.nodeSelected || null;
 
 	var canvas = this[0];
 	var ctx = canvas.getContext("2d");
@@ -86,6 +88,9 @@ jQuery.fn.springy = function(params) {
 			// Part of the same bug mentioned later. Store the previous mass
 			// before upscaling it for dragging.
 			dragged.point.m = 10000.0;
+			
+			// Call the nodeSelected code passed during initialization
+			nodeSelected(selected.node);
 		}
 
 		renderer.start();