cleanup and add readme

README.md

+Testing:
+# Project Setup and Testing
+
+## Testing:
+
+### Locally
+
+- Run playmode from `ConnectionScene`.
+- Open Virtual players from `Window` -> `MultiPlayer` -> `MultiPlayer Play mode`.
+
+### Multiple devices
+
+- Get Host's IP from `cmd` using `-ipconfig` (should be something like `192.168.68.xxx`). Put this IP address for both host and client Connection Address.
+- Make sure to open the necessary port in your firewall.
+
+## Credits:
+
+The project is inspired by Turbo Makes Games tutorial: [Turbo Makes Games tutorial](https://www.youtube.com/watch?v=8efRGtRCGJ0).