Readme -> container style example

Author: gor181

README.md

@@ -57,8 +57,24 @@ class DemoComponent extends React.Component {
   render() {
     const {notifications} = this.props;
 
+    //Optional styling
+    const style = {
+      NotificationItem: { // Override the notification item
+        DefaultStyle: { // Applied to every notification, regardless of the notification level
+          margin: '10px 5px 2px 1px'
+        },
+
+        success: { // Applied only to the success notification item
+          color: 'red'
+        }
+      }
+    };
+
     return (
-      <Notifications notifications={notifications} />
+      <Notifications
+        notifications={notifications}
+        style={style}
+      />
     );
   }
 }