finished custom shape serialization with new attrs structure

dist/kinetic-core.js

@@ -1121,6 +1121,7 @@ Kinetic.Stage.prototype = {
         function addNode(node) {
             var obj = {};
             obj.attrs = node.attrs;
+
             obj.nodeType = node.nodeType;
             obj.shapeType = node.shapeType;
 
@@ -1145,7 +1146,7 @@ Kinetic.Stage.prototype = {
         function loadNode(node, obj) {
             // if custom shape then set draw function
             if(obj.nodeType === 'Shape' && obj.shapeType === undefined) {
-                node.drawFunc = drawFuncs[obj.drawFuncName];
+                node.drawFunc = drawFuncs[obj.attrs.drawFuncName];
             }
 
             var children = obj.children;
@@ -1928,11 +1929,10 @@ Kinetic.Shape = function(config) {
     this.attrs.strokeWidth = undefined;
     this.attrs.lineJoin = undefined;
     this.attrs.detectionType = 'path';
-    this.attrs.drawFuncName = undefined;
 
     // special
     this.drawFunc = config.drawFunc;
-
+    
     this.data = [];
     this.nodeType = 'Shape';