Add CONTROLS section.

Hey, thank you all for your positive feedback.
I just realized there was the section describing the controls missing in the man page, so I added it. While I was at it, I also fixed a small typo and updated the version. I'd suggest to dynamically read the version from VERSION and putting it in the man-page (and possibly other places if you want to add a -v option) when running make (install). Let me know if I shall implement that and open another pull request.