docs: bring README.md in line with Standard Readme

README.md

@@ -1,8 +1,32 @@
 # verae-nats-accounts
 
+[![standard-readme compliant](https://img.shields.io/badge/readme%20style-standard-brightgreen.svg?style=flat-square)](https://github.com/RichardLitt/standard-readme)
+
 NATS **account + leaf allow-list**. Leaf nodes cannot publish `verae.billing.*`.
 
 **Forgejo:** https://git.georgelambert.org/marchon/verae-nats-accounts
 
 - `policy.json` — machine-readable allow/deny (used by access-leaf).
 - `nats.conf` — sketch for a future accounts-enabled nats-server (loopback).
+
+## Install
+
+```sh
+git clone ssh://git@git.georgelambert.org:2223/marchon/verae-nats-accounts.git
+cd verae-nats-accounts
+```
+
+## Usage
+
+```sh
+# No single entrypoint is declared in this tree.
+ls
+```
+
+## Contributing
+
+Questions: open an issue at https://git.georgelambert.org/marchon/verae-nats-accounts/issues. Pull requests are accepted.
+
+## License
+
+UNLICENSED © George Lambert