Update README.md

README.md

@@ -13,9 +13,9 @@ In [this article](https://www.linkedin.com/pulse/recovering-passwords-from-pixel
 ![image](docs/img/Recovering_prototype_latest.png)
 
 ## Usage
-
+https://damip.net/article-de-bruijn-sequence
 * Cut out the pixelated blocks from the screenshot as a single rectangle.
-* Paste a De Bruijn sequence with expected characters in an editor with the same font settings (text size, font, color, hsl).
+* Paste a [De Bruijn sequence](https://damip.net/article-de-bruijn-sequence) with expected characters in an editor with the same font settings (text size, font, color, hsl).
 * Make a screenshot of the sequence. If possible, use the same screenshot tool that was used to create the pixelized image.
 * Run `python depix.py -p [pixelated rectangle image] -s [search sequence image] -o output.png`