Make readme instructions more clear (#2)

Co-Authored-By: fivesevenblue <fivesevenblue@disroot.org>

README.md

@@ -1,13 +1,28 @@
 # misskey gooner remover 3000
 
-simple nodejs script to remove inactive accounts on sharkey / misskey fediverse instances
+Simple nodejs script to remove inactive accounts on sharkey / misskey fediverse instances
 
-## installation
+## Installation
 
-```
+1. Install bun and run:
+
+   ```text
    bun install
    node main.js
+   ```
 
+## Create env file
+
+1. Create an API key with the permissions
+   - Delete user account
+   - View private user info
+
+2. Create a `.env` file in the current directory with:
+
+   ```env
+   USER_TOKEN=token
+   INSTANCE_URL=https://example.com
+   PERIOD=int // Time in days
    ```
 
 License: MIT