README: update with info

README.md

@@ -1,2 +1,22 @@
-# checkpoint
+# 🛑 Checkpoint
+
 Checkpoint is a tiny reverse proxy that attempts to block AI by serving a cryptographic challenge.
+
+_This project is a work-in-progress. It works, but has only basic functionality._
+
+## Why?
+
+AI scrapers are everywhere. This will stop them. `robots.txt` won't.
+
+## Features
+- Protect your endpoint from AI bots with a cryptographic challenge
+- Easy configuration in jsonc
+- Support for cloudflare
+
+### Planned features
+- Dynamic challenge amount (aka difficulty)
+- Detection of token overuse
+- Better wait screen
+
+## Caveats
+If you are using this, it's almost certain search engines will stop indexing your site. Keep this in mind.