update checkbox demo

components/checkbox/demo/basic.md

@@ -9,8 +9,8 @@
 ````jsx
 var Checkbox = antd.Checkbox;
 var container = document.getElementById('components-checkbox-demo-basic');
-function onChange(checked){
-  console.log('checked = ' + checked);
+function onChange(e){
+  console.log('checked = ' + e.target.checked);
 }
 
 React.render(<label><Checkbox defaultChecked={false} onChange={onChange}/> &nbsp; &nbsp; checkbox</label>, container);

components/checkbox/demo/controller.md

@@ -45,8 +45,7 @@ var App = React.createClass({
         this.setState({disabled:!this.state.disabled});
     },
     onChange(checked){
-        console.log('checked = ',checked);
-        this.setState({checked:checked});
+        console.log('checked = ',e.target.checked);
     }
 
 });

components/checkbox/index.md

@@ -20,4 +20,4 @@
 |-----------|------------------------------------------|------------|-------|--------|
 |  checked | 指定当前是否选中 | boolean  |   | false    |
 |  defaultChecked | 初始是否选中 | boolean |  | false |
-|  onChange | 变化时回调函数 | Function(checked:boolean) |  |  |
+|  onChange | 变化时回调函数 | Function(e:Event) |  |  |