Supplying current socket.io

[snowkeeper]

Some of my projects already have socket.io setup. To make things easier I have been trying out a fork that accepts an io instance in opts when available.

Is there an interest in a PR for this behavior. I can clean up and submit something if wanted.

[capaj]

@snowkeeper this would certainly be interesting as an option. Definately interested-if it looks nice I will merge it for sure.

[ArmorDarks]

@snowkeeper are you still up on doing this?

[tamaker]

@snowkeeper did you ever get anywhere with this? thanks!