CPU plugin documentation

[thesourcerer8]

Please add documentation about the various CPU plugins, what they do, and what their limitations are, so that a user can know which plugin to choose.

[pfalcon]

Where would you expect to find such documentation? There's a bit of chicken and egg problem: as there's no general documentation per se, it's unclear where to make, and whether it makes sense to start, with putting random bits like that. And well, there's a starter docs, that's README. But its size can't be infinite, or people won't read it.

So, ideas are really welcome, and I of course would like to add some docs "one sweet day", but before that, in small amount of time I have, I keep adding code ;-).

[pfalcon]

And to illustrate the point that external ideas are helpful, let me show what I considered useful to do, seeing this ticket: 9c06dfc , abb5acc .

Is that what you'd expect? No? ;-) Then I appreciate specific ideas ;-).

[pfalcon]

Also let's have https://github.com/pfalcon/ScratchABit/blob/master/plugins/cpu/README.md

[thesourcerer8]

Looks great!