Update 'README.md'

README.md

@@ -1,2 +1,20 @@
-# town-of-us-updater
+# Town of Us Updater
 
+A tool to automatically install the **Town of Us R** mod for **Among Us**.
+
+## Features
+
+- Caches old builds to allow you to continue playing the mod in case of a breaking Among Us update
+- GUI to select which build to play
+- Auto-detection of Among Us install directory
+
+# Contributing
+
+Help. I have no standards. Just look at the code.
+
+## How to Build
+
+- [Install Rust](https://www.rust-lang.org/learn/get-started)
+- Download repository
+- Navigate to repository
+- `cargo build`