Style guide on README because nobody reads CONTRIBUTING.md

README.md

@@ -1,5 +1,8 @@
 # atari-ai [![Gitter](http://img.shields.io/:chat-on_gitter-33CC99.svg)](https://gitter.im/Stitchpunk/atari-ai "Join the discussion")
 
+#Style Guide
+- Use four spaces for indentation, NOT TABS (I'm talking to you, Richard).
+
 <img src="https://cdn.meme.am/instances/500x/40336443.jpg"></img>
 
 <br>