Add a plain vanilla Markdown version of index.html

[straup]

Two things:

1. Licenses – this uses and includes a copy of @aaronsw 's html2text.py [1] which is GPL3 which probably means ... hilarity. I haven't actually gotten to the licenses section of this article (there is a section about licenses, right?) because of (2)

2. I tried reading the essay online. I got to the part about LinkedIn followers and then something about the videowrapper stuff [1] and ad blockers causes the following half a dozen paragraphs to not be rendered.

So I made this.

[1] http://www.aaronsw.com/2002/html2text/
[2] https://github.com/BloombergMedia/whatiscode/blob/master/index.html#L208
[3] https://github.com/BloombergMedia/whatiscode/blob/master/index.html#L217-L227

[ftrain]

@straup there is no section about licenses in the article because I wanted people to not hate everything forever and also I didn't want to poke the bear and get THE EMAIL again, you know the email and the bear I'm talking about.

[1wheel]

What adblocker/browser combo are you using? Can't reproduce with AdBlock on chrome.