Comment contract code

[0xernesto]

It would be nice if the contract code was commented to make it easier to follow. Consider using NatSpec format. I understand most people will treat these contracts as a black box and trust the code because it's audited, but some of us want to understand the code before committing to using Kernel. Comments would save a lot of time when reviewing the code.

[leekt]

will move this to highest priority next week