Added instructions to the readme of the socket.io based version

readme.mdown

@@ -2,6 +2,13 @@
 
 This multiplayer snake game was built to try out canvas, node.js with websockets, and coffeescript.
 
-You can see a socket.io based version in action at [http://snake.9elements.com/](http://snake.9elements.com/), but you should use Chrome or Safari to view it...
+You can see it in action at [snake.9elements.com](http://snake.9elements.com/), but you should use Chrome or Safari to view it...
 
-You are currently viewing the socket.io based branch. The project was converted to make hosting on Nodester easier / possible. To see it in action, please click the url above. For local testing or own experiments, I recommend using the current master, since it's a bit cleaner.
+# Installation
+
+To try this experiment out on your local machine, go through the following steps:
+
+* Clone this repository
+* Go to the folder, and run `npm install`
+* To start the server, run `node server.js`
+* To start a client, open `http://localhost:5000` in a browser supporting canvas and websockets, i.e. the latest version of Safari or Chrome