update readme

Readme.md

@@ -2,6 +2,19 @@
 
 Vibe coding.. but more manual
 
+## Instructions
+
+1. Make a credentials.toml in the immediate directory of your clone:
+
+```toml
+[gemini]
+api_key = "****"
+[anthropic]
+api_key = "****"
+```
+
+2. Have fun. This is experiemntal slop.
+
 ```ps1
 uv run .\gui.py
 ```