added getSize() method to Stage, Rect, and Image. Also updated unit tests

src/GlobalObject.js

@@ -109,7 +109,7 @@ Kinetic.GlobalObject = {
                     return 2.5 + b * transition.time;
                 });
                 break;
-            // linear is default
+            // none is default
             default:
                 this._transitionPow(transition, key, prop, function() {
                     return 1;

src/Node.js

@@ -428,8 +428,8 @@ Kinetic.Node.prototype = {
      *  radius, scale.x, scale.y, centerOffset.x, centerOffset.y, etc.
      * @param {Object} config
      * @config {Number} [duration] duration that the transition runs in seconds
-     * @config {String} [easing] easing function.  can be linear, ease-in, ease-out, or ease-in-out.
-     *  linear is the default
+     * @config {String} [easing] easing function.  can be none, ease-in, ease-out, or ease-in-out.
+     *  none is the default
      * @config {Function} [callback] callback function to be executed when
      *  transition completes
      */

src/Stage.js

@@ -120,6 +120,15 @@ Kinetic.Stage.prototype = {
         this.backstageLayer.getCanvas().width = width;
         this.backstageLayer.getCanvas().height = height;
     },
+    /**
+     * return stage size
+     */
+    getSize: function() {
+        return {
+            width: this.width,
+            height: this.height
+        };
+    },
     /**
      * clear all layers
      */

src/shapes/Image.js

@@ -80,6 +80,15 @@ Kinetic.Image.prototype = {
     setSize: function(width, height) {
         this.width = width;
         this.height = height;
+    },
+    /**
+     * return image size
+     */
+    getSize: function() {
+        return {
+            width: this.width,
+            height: this.height
+        };
     }
 };
 // extend Shape

src/shapes/Rect.js

@@ -57,6 +57,15 @@ Kinetic.Rect.prototype = {
     setSize: function(width, height) {
         this.width = width;
         this.height = height;
+    },
+    /**
+     * return rect size
+     */
+    getSize: function() {
+        return {
+            width: this.width,
+            height: this.height
+        };
     }
 };