Added Engine Information

Including some (useless) compilation information.

Author: Zishan-Rahman

README.md

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 ## A two-player Sokoban game. My submission for the [United Game Jam 2020](https://itch.io/jam/united-game-jam-2020) on [itch.io](https://itch.io/).  
 
-Thanks to:
+This game was written in the Godot game engine. It should not be hard to compile the game through Godot into a binary executable for the platform of your choice.
 
+Thanks to:
 - [Emilio Coppola](https://www.youtube.com/playlist?list=PLQsiR7DILTcyz3qHGXvQstsB81O1NcBPM) for the main idea behind this game.
 - [Harshit Arora](https://www.youtube.com/channel/UC9PRdJ2wyB9C3_wbIKNhLMQ/) for organising this jam.
 - kenney.nl for most (if not all) of the art and sound effects.