feat: support packaged as directly imported js file

Co-authored-by: xiaoweii <xiaoweii@amazom.com>

README.md

@@ -163,20 +163,41 @@ ClickstreamAnalytics.updateConfigure({
 
 ## How to integrate and test locally
 
-**Integrate**
+### Integrate the `.tgz` file
 
-Clone this repository locally, execute the following script to generate `aws-clickstream-web-x.x.x.tgz` zip package, which will be located in the project root folder.
+Clone this repository locally and execute the following script to generate `aws-clickstream-web-0.2.0.tgz` zip package, which will be located in the project root folder.
 ```bash
-cd clickstream-web && npm run pack
+cd clickstream-web && npm i && npm run pack
 ```
 
-Copy the `aws-clickstream-web-x.x.x.tgz` into your project, then execute the following script in your project root folder to install the SDK.
+Copy the `aws-clickstream-web-0.2.0.tgz` into your project, then execute the script in your project root folder to install the SDK.
 ```bash
-npm install ./aws-clickstream-web-x.x.x.tgz
+npm install ./aws-clickstream-web-0.2.0.tgz
 ```
-Note: Please correct the SDK version and change the path to where the `aws-clickstream-web-x.x.x.tgz` file is located.
+**Note**: Please correct the SDK version and change the path to where the `aws-clickstream-web-0.2.0.tgz` file is located.
 
-**Test**
+### Integrate the `clickstream-web.min.js` file
+Execute the following script to generate `clickstream-web.min.js`, located in the `/dist` folder.
+```bash
+cd clickstream-web && npm i && npm run pack
+```
+Copy the `clickstream-web.min.js` into your project and add the following initial code into your `index.html`.
+
+```html
+<script src="clickstream-web.min.js"></script>
+<script>
+    window.ClickstreamAnalytics.init({
+        appId: 'your appId',
+        endpoint: 'https://example.com/collect',
+        isLogEvents: true,
+        pageType: window.PageType.SPA, //multiPageApp
+        sendMode: window.SendMode.Batch, //Immediate
+    })
+</script>
+```
+You can also find the `clickstream-web.min.js` file in the [Release](https://github.com/awslabs/clickstream-web/releases) page.
+
+### Test
 
 ```bash
 npm run test