update readme

Author: phucbm

README.md

@@ -1,8 +1,18 @@
 # jquery-scroll-direction-plugin
-A jQuery plugin to detect scroll direction.
+A lightweight jQuery plugin to detect scroll direction.
 
-## CDN
+## Getting started
+
+### 1. Include Scroll Direction Plugin to your site.
+
+**Direct Download**
+
+You can [download the plugin directly from Github](https://raw.githubusercontent.com/phucbm/jquery-scroll-direction-plugin/main/jquery.scroll-direction.js).
 
 ```html
-<script src="https://cdn.jsdelivr.net/gh/phucbm/jquery-scroll-direction-plugin/jquery.scroll-direction.js"></script>
+<script src="your-path/jquery.scroll-direction.js"></script>
 ```
+
+**CDN** [![](https://data.jsdelivr.com/v1/package/gh/phucbm/jquery-scroll-direction-plugin/badge)](https://www.jsdelivr.com/package/gh/phucbm/jquery-scroll-direction-plugin)
+
+You can also browse for the latest version by visiting [Scroll Direction Plugin on jsDelivr](https://cdn.jsdelivr.net/gh/phucbm/jquery-scroll-direction-plugin/)