first pass of new Label plugin

src/plugins/Label.js

@@ -0,0 +1,59 @@
+(function() {
+    // constants
+    var ATTR_CHANGE_LIST = ['fontFamily', 'fontSize', 'fontStyle', 'padding', 'lineHeight', 'text'],
+        CHANGE_KINETIC = 'Change.kinetic',
+        TEXT = 'text',
+        RECT = 'rect';
+
+    // cached variables
+    attrChangeListLen = ATTR_CHANGE_LIST.length;
+
+    /**
+     * Label constructor.  Blobs are defined by an array of points and
+     *  a tension
+     * @constructor
+     * @param {Object} config
+     * @param {String} [config.fontFamily] default is Calibri
+     * @param {Number} [config.fontSize] in pixels.  Default is 12
+     * @param {String} [config.fontStyle] can be normal, bold, or italic.  Default is normal
+     * @param {String} config.text
+     * @param {Number} [config.padding]
+     * @param {Number} [config.lineHeight] default is 1
+     * @param {String} [config.textFill]
+     * @param {String} [config.textStroke]
+     * @param {Number} [config.cornerRadius]
+     * {{ShapeParams}}
+     * {{NodeParams}}
+     */
+    Kinetic.Plugins.Label = function(config) {
+        this._initLabel(config);
+    };
+
+    Kinetic.Plugins.Label.prototype = {
+        _initLabel: function(config) {
+            var that = this,
+                text = null;
+
+            this.createAttrs();
+            Kinetic.Group.call(this, config);
+            this.setText(new Kinetic.Text(config.text));
+            this.setRect(new Kinetic.Rect(config.rect));
+            this.add(this.getRect());
+            this.add(this.getText());
+
+            text = this.getText();
+            // update text data for certain attr changes
+            for(var n = 0; n < attrChangeListLen; n++) {
+                text.on(ATTR_CHANGE_LIST[n] + CHANGE_KINETIC, function() {
+                    that.getRect().setSize(this.getSize());            
+                });
+            }
+        }
+    };
+    
+    Kinetic.Global.extend(Kinetic.Plugins.Label, Kinetic.Group);
+
+    Kinetic.Node.addGetterSetter(Kinetic.Plugins.Label, TEXT);
+    Kinetic.Node.addGetterSetter(Kinetic.Plugins.Label, RECT);
+
+})();