Expand readme

Author: pwalig

README.md

@@ -13,3 +13,20 @@ For information about installing zig see: https://ziglang.org/learn/getting-star
 ```
 ./zig-out/bin/mini-rts-zig-bot.exe <host> <port>
 ```
+
+# Compatibility
+
+zig-bot is compatible with [mini-RTS-server](https://github.com/pwalig/mini-RTS-server)
+
+## Version compatibility chart
+
+| version | 1.x.x | 2.x.x | 3.0.0 |
+| --- | --- | --- | --- |
+| **1.0.0** | :x: | :x: | :heavy_check_mark: |
+
+> [!NOTE]  
+> columns: server versions  
+> rows: zig-bot versions  
+> x stands for any version number
+
+Generally server will be 2 major versions ahead.