Merge pull request #57 from aaronfranke/readme-3.2.1

Update README file for the 3.2.1 branch

README.md

@@ -6,9 +6,11 @@ Third person shooter demo made using [Godot Engine](https://godotengine.org).
 
 ## Godot versions
 
-- The [`master`](https://github.com/godotengine/tps-demo) branch is compatible with the latest stable Godot version (currently 3.2).
+- The [`master`](https://github.com/godotengine/tps-demo) branch is compatible with the latest stable Godot version (currently 3.2.x that is at least 3.2.2).
 - If you are using an older version of Godot, use the appropriate branch for your Godot version:
 
+  - [`3.2.1`](https://github.com/godotengine/tps-demo/tree/3.2.1) branch
+  for Godot 3.2.0 or 3.2.1.
   - [`3.1`](https://github.com/godotengine/tps-demo/tree/3.1) branch
   for Godot 3.1.x.