Add info about how to play in README (or in game)

[MatthewScholefield]

I noticed this game and took a look at the demo. However, I couldn't figure out what the controls were nor how to win/die. (perhaps background knowledge on Magicka would help me) I eventually figured out to use WASD to move and XCVB to change some sprite at the top that sometimes shoots when clicking. I was thinking it might help to put that on the README 😄 .

I would submit a PR except I don't think my knowledge of how to play is that accurate xD.

[ajusa]

Hi,
You are completely right. Actually, I used to have instructions in the demo, however I removed them when the space-bar became a button to fire (which was now removed). I will update the game, and the readme as soon as my finals are done XD.
Just curious here, how did you find this game?

[MatthewScholefield]

I actually found this game from your GitHub page. Earlier today when I was working on Port-Craft (previously Mine-DS) I noticed you had starred it.