[Challenge] Rainbow BBCode Generator

[The Unintelligible]

Is this what you wanted?

Spoiler:

https://gist.github.com/3360969

Result:
Hello my name is Alex/Artificial. I'm just testing the convert function.

Sitting in a lecture trying to pay attention while coding it. I just realised I haven't picked up anything in the last 10 minutes! Thanks for disrupting my education! lol

I laughed.

But nice work. Elegant solution as always.

Enjoy your rep! lol.