added getNodeType() and getShapeType() methods

src/Node.js

@@ -926,6 +926,14 @@
             go._addName(this, name);
             this.setAttr(NAME, name);
         },
+        /**
+         * get node type.  Returns 'Stage', 'Layer', 'Group', or 'Shape'
+         * @name getNodeType
+         * @methodOf Kinetic.Node.prototype
+         */
+        getNodeType: function() {
+            return this.nodeType;
+        },
         setAttr: function(key, val) {
             var oldVal;
             if(val !== undefined) {

src/Shape.js

@@ -163,6 +163,14 @@
         disableDashArray: function() {
             this.setAttr('dashArrayEnabled', false);
         },
+        /**
+         * get shape type.  Ex. 'Circle', 'Rect', 'Text', etc.
+         * @name getShapeType
+         * @methodOf Kinetic.Shape.prototype
+         */
+        getShapeType: function() {
+            return this.shapeType;
+        },
         remove: function() {
             Kinetic.Node.prototype.remove.call(this);
             delete Kinetic.Global.shapes[this.colorKey];