Add pud label and drawer controller description

README.md

@@ -1,5 +1,6 @@
 # Flutter slider drawer
 
+[![pub package](https://img.shields.io/pub/v/flutter_slider_drawer)](https://pub.dev/packages/flutter_slider_drawer)
 
 A Flutter package with custom implementation of the Sider Drawer Menu
 
@@ -47,3 +48,38 @@ SliderMenuContainer(
             ),
             sliderMainWidget: MainWidget()),
  ```
+ 
+ 
+### Controlling the drawer
+
+```
+GlobalKey<SliderMenuContainerState> _key =
+      new GlobalKey<SliderMenuContainerState>();
+  
+   @override
+  Widget build(BuildContext context) {
+  return SliderMenuContainer(
+            appBarColor: Colors.white,
+            key: _key,
+            sliderMenuWidget: MenuWidget(
+              onItemClick: (title) {
+                _key.currentState.closeDrawer();
+                setState(() {
+                  this.title = title;
+                });
+              },
+            ),
+           sliderMainWidget: MainWidget()),
+      ),
+      
+```
+
+* Using the below methods for controll drawer.
+``` 
+ _key.currentState.closeDrawer();
+ _key.currentState.openDrawer();
+ _key.currentState.toggle();
+ _key.currentState.isDrawerOpen();
+ ```
+
+