update readme for styling

Author: dev-javascript

README.md

@@ -20,6 +20,15 @@ $ npm install react-dyn-tabs --save
 ```
 
 
+## Styling
+react-dyn-tabs does not include any style loading by default. Default stylesheets and themes are provided and can be included in your application if desired.
+
+```js
+import 'react-dyn-tabs/style/react-dyn-tabs.css';
+import 'react-dyn-tabs/themes/default.css';
+```
+
+
 ## License
 
 MIT