docs: add a simple README (#1)

Author: ashtonav

README.md

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+# AddressData frontend
+
+<img src="docs/logo.svg" alt="Description" width="105">
+
+[![Deployment](https://github.com/ashtonav/addressdata-frontend/actions/workflows/addressdata-app-AutoDeployTrigger-1352a65f-b8b9-449e-a5dd-c191984e6a8c.yml/badge.svg)](https://github.com/ashtonav/addressdata-frontend/actions/workflows/addressdata-app-AutoDeployTrigger-1352a65f-b8b9-449e-a5dd-c191984e6a8c.yml)
+[![license](https://img.shields.io/github/license/ashtonav/addressdata-frontend.svg)](LICENSE)
+
+This code is used to power [AddressData.net](https://AddressData.net), a site that displays all known addresses by city, alongside an interactive map.
+
+Currently, [AddressData.net](https://AddressData.net) contains millions of addresses for over 1,500 cities around the world.
+
+## Installation
+
+```bash
+cd src
+docker run -p 8001:8001 -it $(docker build -q .)
+```
+
+It may take 10 minutes or more for docker build to be completed.  Afterward, the website can be accessed at http://localhost:8001
+
+## Acknowledgments
+
+- **Datasette**:  
+  [Datasette](https://docs.datasette.io/en/stable/) is used to display CSV data on a website. It offers a lightweight, flexible way to query and visualize structured data, making it easier to explore and share the address information we collect.
+
+## Contributing
+
+Pull requests are accepted.
+
+## License
+
+[MIT](https://choosealicense.com/licenses/mit/)