Add deploy script
Add deploy script

Taken from https://github.com/namespaceappclub/namespaceappclub.github.io/blob/working/scripts/deploy.sh. Once the project has been built, push to the gh-page so the game can be played by visiting https://msanatan.github.io/square-invaders/.

msanatan/square-invaders,msanatan/square-invaders,msanatan/square-invaders