Add quick start to readme

README.md

@@ -1,3 +1,31 @@
 # Sparse Autoencoder
 
+[![Checks](https://github.com/alan-cooney/sparse_autoencoder/actions/workflows/checks.yml/badge.svg)](https://github.com/alan-cooney/sparse_autoencoder/actions/workflows/checks.yml)
+[![Release](https://github.com/alan-cooney/sparse_autoencoder/actions/workflows/release.yml/badge.svg)](https://github.com/alan-cooney/sparse_autoencoder/actions/workflows/release.yml)
+
+**Note**: This package is in alpha and likely to have breaking changes regularly.
+
 A sparse autoencoder for mechanistic interpretability research.
+
+```shell
+pip install sparse_autoencoder
+```
+
+## Demo
+
+Check out the demo notebook for a guide to using this library.
+
+## Contributing
+
+This project uses [Poetry](https://python-poetry.org) for dependency management. After checking out
+the repo, install all dependencies with:
+
+```shell
+poetry install --with dev,demos
+```
+
+Then to run all checks locally:
+
+```shell
+poetry run checks
+```