Update readme.

Author: tompollard

README.md

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-# WFDB website
+# WFDB Website
 
-This repository contains code for the [WFDB website](https://wfdb.io/).
+This repository contains the source code for the official Waveform Database (WFDB) project website, built using [Jekyll](https://jekyllrb.com/) and the [Just the Docs](https://just-the-docs.github.io/just-the-docs/) theme. The site serves as a central resource for the WFDB community, providing:
+
+- A specification for the WFDB format.
+- An overview of WFDB software implementations.
+
+The website is hosted at [https://wfdb.io](https://wfdb.io).
+
+## About WFDB
+
+The Waveform Database (WFDB) is a set of open file format standards for physiological waveform and annotation data. Originally developed by George B. Moody in 1989 at the Harvard-MIT Division of Health Sciences and Technology, WFDB has become a widely adopted standard in the field of biomedical signal processing.
+
+WFDB files typically consist of:
+
+- **Header files** (`.hea`): Contain metadata about the recording.
+- **Signal files** (`.dat`): Store the waveform data.
+- **Annotation files** (`.atr`, `.ann`, etc.): Contain annotations such as beat labels or event markers.
+
+For more details, refer to the [WFDB Format Specification](https://wfdb.io/spec/).
+
+## Repository Structure
+
+- `_config.yml`: Jekyll site configuration.
+- `Gemfile`: Ruby gem dependencies.
+- `index.md`: Homepage content.
+- `spec/`: Contains pages related to the WFDB format specification.
+- `software/`: Contains pages describing WFDB software implementations.
+- `working-group.md`: Information about the WFDB Working Group.
+
+## Installation
+
+To build and serve the website locally, follow these steps:
+
+1. **Install Ruby and Bundler**
+
+   Ensure you have Ruby installed. Then, install Bundler:
+
+   ```bash
+   gem install bundler
+   ```
+
+2. **Clone the Repository**
+
+   ```bash
+   git clone https://github.com/wfdb/wfdb.github.io.git
+   cd wfdb.github.io
+   ```
+
+3. **Install Dependencies**
+
+   ```bash
+   bundle install
+   ```
+
+4. **Serve the Site Locally**
+
+   ```bash
+   bundle exec jekyll serve
+   ```
+
+   The site will be available at `http://127.0.0.1:4000/`.
+
+## Contributing
+
+Contributions are welcome! If you'd like to contribute to the WFDB website, please fork the repository, make your changes, and submit a pull request. For major changes, please open an issue first to discuss what you'd like to change.
+
+## License
+
+This project is licensed under the [MIT License](LICENSE).