merge conflict

src/core/kityminder.js

@@ -354,7 +354,7 @@ kity.extendClass(KityMinder, {
         var selection = this.getSelectedNodes();
         if (false === nodes instanceof Array) nodes = [nodes];
         for (var i = 0; i < nodes.length; i++) {
-            if (selection.indexOf(nodes[i]) !== -1) {
+            if (selection.indexOf(nodes[i]) === -1) {
                 selection.push(nodes[i]);
             }
         }
@@ -386,10 +386,11 @@ kity.extendClass(KityMinder, {
             this._selectedNodes = [];
             return this;
         }
+        if (false === nodes instanceof Array) nodes = [nodes];
         var originSelection = this.getSelectedNodes();
         var newSelection = [];
         for (var i = 0; i < originSelection.length; i++) {
-            if (nodes.indexOf(originSelection[i]) !== -1) {
+            if (nodes.indexOf(originSelection[i]) === -1) {
                 newSelection.push(originSelection[i]);
             }
         }