Broken link to "an article discussing the design of the algorithm"

[mgrusin]

Hi there! I know this is older work so maybe it's lost to time and interest, but you put a link in your readme.md to an article about your algorithm that I'd personally find very interesting to read, but it currently 404s:

An article discussing the design of the algorithm can be found [here](http://damienclarke.me/code/posts/writing-a-better-noise-reducing-analogread).

If you're inclined to repair the link, cool. If not, also cool. Cheers and thanks very much for your work!

-Mike Grusin, Boulder CO USA