Add README.md

Author: jedisct1

README.md

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+# IPCrypt Website
+
+This repository contains the source code for the IPCrypt specification website, deployed at [ipcrypt-std.github.io](https://ipcrypt-std.github.io).
+
+## About IPCrypt
+
+IPCrypt is a lightweight encryption technique for IPv4 and IPv6 addresses that preserves address format while providing cryptographic obfuscation. It's designed for applications that need to anonymize IP addresses while maintaining their utility for analysis.
+
+## Repository Structure
+
+- `/www` - Jekyll-based static site source
+  - `/_implementations` - Code examples in various languages
+  - `/pages` - Main content pages (specification, implementations, etc.)
+  - `/assets` - CSS, JavaScript, and images
+
+## Local Development
+
+```bash
+cd www
+./setup.sh  # Initial setup
+bundle exec jekyll serve
+```
+
+The site will be available at `http://localhost:4000/`
+
+## Deployment
+
+The site automatically deploys to GitHub Pages when changes are pushed to the `main` branch.
+
+## Contributing
+
+Contributions are welcome! Please feel free to submit pull requests with:
+- New language implementations
+- Documentation improvements
+- Bug fixes