Consider writing this as Jupyter notebooks instead of JavaScript

GitHub supports executing and rendering [Jupyter notebooks](https://jupyter.org/) which would be much more maintainable and expressive (especially since you can use `numpy` to execute all kinds of math operations out of the box).

Another big benefit is that you can have GitHub render math notations for you instead of including lots of images in the repo (+ you get retina support!).

Example on GitHub using Jupyter:
- https://github.com/stitchfix/Algorithms-Notebooks/blob/master/Long-Tails.ipynb