edit readme

Author: hulyak

Diff for: README.md

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-# PDF.js Web Example with jQuery
+## PDF.js Web Example jQuery
 
-### You can see the demo [here](https://pspdfkit-labs.github.io/pdfjs-web-example-jquery/)!
+## Getting Started
 
-Accompanying blog post: [How to Build a jQuery PDF Viewer with PDF.js](https://pspdfkit.com/blog/2021/how-to-build-a-jquery-pdf-viewer-with-pdfjs/)
+This repository is an example of how to build a jQuery PDF viewer with PDF.js. Check out the related [blog post](https://pspdfkit.com/blog/2021/how-to-build-a-jquery-pdf-viewer-with-pdfjs/) and [demo](https://pspdfkit-labs.github.io/pdfjs-web-example-jquery/)!
+
+## Running the Example
+
+1. Install the `serve` package:
+
+```bash
+npm install --global serve
+```
+
+2. Serve the contents of the current directory:
+
+```bash
+serve -l 8080 .
+```
+
+3. Navigate to http://localhost:8080 to view the website.
+
+## Contributing
+
+Please ensure [you have signed our CLA](https://pspdfkit.com/guides/web/current/miscellaneous/contributing/) so that we can accept your contributions.