Update README.md

Author: andyhd

README.md

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-# ld42
-My entry for Ludum Dare 42
+# Beaver Pitch
+Written in 48 hours for [Ludum Dare 42](https://ldjam.com/events/ludum-dare/42/beaver-pitch). The theme was "Running out of space".
+
+![Title screen](assets/title.png)
+
+## What
+Barnaby the beaver’s lodge is under attack by a bunch of naughty neighbour beavers. They want to steal Barnaby’s logs to use in their own dams. You have to stop them!
+
+My idea was that Barnaby can’t swim, so as the logs are stolen he is *running out of space*. Sadly, there's a bug in v0.1.0 which allows Barnaby to swim/walk on water, so you'll have to imagine that part. Fix coming soon.
+
+Unfortunately, I ran out of time to get the game working well, or to do animations or music. There is no victory condition, either, so you can't win at the moment :(
+
+Feel free to use my code and art for anything you like. Let me know if you find it useful!
+
+## Download
+Windows, Mac and Linux versions are on the [releases page](https://github.com/andyhd/ld42/releases)
+
+## How to Play
+Use the arrow keys to move Barnaby
+
+Walk into the attacking beavers to get rid of them
+
+## Thanks
+* Made possible by Pavel Korolev's [trivial-gamekit](https://github.com/borodust/trivial-gamekit) - this makes it easy to use   OpenGL and OpenAL; load images, sounds and fonts; and compile Windows, Linux and Mac binaries. Highly recommended!
+* [GIMP](https://www.gimp.org/) for graphics
+* [Bfxr](https://www.bfxr.net/) for generating sound effects
+* [Quicklisp](https://www.quicklisp.org/beta/)
+* [Steel Bank Common Lisp](http://www.sbcl.org/)
+* Typographer Mediengestalter for the [Pinewood font](https://www.1001fonts.com/pinewood-font.html)