Update tree.model.ts
Update tree.model.ts
500tech/angular2-tree-component,sm-allen/angular-tree-component,500tech/angular2-tree-component,Alexey3/angular-tree-component,sm-allen/angular-tree-component,500tech/angular2-tree-component,Alexey3/angular-tree-component,sm-allen/angular-tree-component,Alexey3/angular-tree-component