Fixed up the docs.

README.md

@@ -0,0 +1,35 @@
+Cambridge
+=========
+
+Welcome to Cambridge, the next open-source falling-block game engine!
+
+
+Installation instructions
+-------------------------
+
+Pre-built releases are available on the releases page.
+
+### Windows
+
+Unzip the exe file and run it directly. All assets are currently bundled inside the executable.
+
+### macOS
+
+For the time being, the file `cambridge.love` only works on the command line. Install `love` with [https://brew.sh/](Homebrew), and run:
+
+    $ love cambridge.love
+
+### Linux
+
+Same as macOS, except use your favourite package manager.
+
+License
+-------
+
+The Cambridge project is licensed under the MIT license (included in LICENSE.md).
+
+Some code and assets in this repository are contributed by members of the
+community, as well as borrowed from other places, either with licensing
+or as placeholders until suitable material can be found that is properly
+licensed. Their original sources, and copyright notices if applicable, are
+listed in the file SOURCES.