Improved Docs, Copyright Commenting Change, Max/Min -> MaxInt/MinInt

This updates the docs for some of the util files (I will get to the rest).
I changed util.Max and util.Min to util.MaxInt and util.MinInt for clarity reasons.

The reason why I changed the comments for the license is because this is the style is what idiomatic Go uses for their licenses. By keeping some of my stuff similar, I got free updates to my docs when godoc gets updated to support new things.