update `kmeans` docstring, add counts to algos

[70Gage70]

Expanded docstring of kmeans function to give a simple example. This was the first thing I checked when I started to use the package and didn't see one.

I also noticed that the algos don't return counts. I just applied the countmap function from StatsBase which we already depend on.

Killer package by the way, it sped up my calculation by an order of magnitude.

[PyDataBlog]

Expanded docstring of kmeans function to give a simple example. This was the first thing I checked when I started to use the package and didn't see one.

I also noticed that the algos don't return counts. I just applied the countmap function from StatsBase which we already depend on.

Killer package by the way, it sped up my calculation by an order of magnitude.

Thanks for looking into this and glad that you like the package :)

I will review and looking forward to it eventually going in.