Merge branch 'dev' of https://github.com/kitygraph/kityminder into dev

src/core/kityminder.js

-var KityMinder = window.KM = window.KityMinder = {};
+var KityMinder =
+    window.KM =
+    window.KityMinder = function(){
+        var instanceMap = {}, instanceId = 0;
+        return {
+            version : '1.0.0',
+            createMinder : function ( renderTarget, options ) {
+                options = options || {};
+                options.renderTo = Utils.isString( renderTarget ) ? document.getElementById( renderTarget ) : renderTarget;
+                var minder = new Minder( options );
+                this.addMinder(options.renderTo,minder);
+                return minder;
+            },
+            addMinder :  function ( target, minder ) {
+                var id;
+                if ( typeof ( target ) === 'string' ) {
+                    id = target;
+                } else {
+                    id = target.id || ( "KM_INSTANCE_" + instanceId++ );
+                }
+                instanceMap[ id ] = minder;
+            },
+            getMinder : function(target,options){
+                var id;
+                if ( typeof ( target ) === 'string' ) {
+                    id = target;
+                } else {
+                    id = target.id || ( "KM_INSTANCE_" + instanceId++ );
+                }
+                return instanceMap[ id ] || this.createMinder(target,options);
+            }
+        }
+    }();
 
-KityMinder.version = '1.0.0.0';
-
-KityMinder.createMinder = function ( renderTarget, options ) {
-    options = options || {};
-    options.renderTo = Utils.isString( renderTarget ) ? document.getElementById( renderTarget ) : renderTarget;
-    return new Minder( options );
-};
-
-var instanceMap = {}, instanceId = 0;
-KityMinder.addMinderInstance = function ( target, minder ) {
-    var id;
-    if ( typeof ( target ) === 'string' ) {
-        id = target;
-    } else {
-        id = target.id || ( "KM_INSTANCE_" + instanceId++ );
-    }
-    instanceMap[ id ] = minder;
-};
-
-KityMinder.getMinder = function ( id ) {
-    return instanceMap[ id ] || this.createMinder( id );
-};
\ No newline at end of file

src/core/minder.js

@@ -47,7 +47,6 @@ var Minder = KityMinder.Minder = kity.createClass( "KityMinder", {
     renderTo: function ( target ) {
         this._paper.renderTo( this._renderTarget = target );
         this._bindEvents();
-        KityMinder.addMinderInstance( target, this );
     },
 
     getRenderContainer: function () {