Update README.md

Author: themonarchoftime

README.md

@@ -2,4 +2,4 @@
 Don't host this until the rewrite. PR's to make the code more optimized are welcome.
 
 # Getting Started
-Set the `DISCORD_TOKEN` environment variable to your bot's token, then `dotnet run`. Alternatively you can use Docker.
+Set the `DISCORD_TOKEN` environment variable to your bot's token and `GITHUB_TOKEN` to your GitHub token, then `dotnet run`. Alternatively you can use Docker.