Adds simple example of connecting to Sam's web socket
Moves tutorial and example work into a separate folder

Keeps the structure of the repo a little cleaner. The key files with
regards to the blog post should be clear.
Adds d3 to the repo - we will need it for the blog work
Adds basic example of creating Bacon event stream from web socket

We create two filtered streams from the main stream, and use one of them
to display text in d3. The other one we currently just log to the console.