update the DIY Guide

[afeld]

Some of the information is out-of-date. Maybe change the name, as well?

[keithrbennett]

I find this confusing:

"Meeting the above requirements, and reflecting on the aforementioned considerations, are the only things we ask to call your group "Hacker Hours". We won't sue you or anything, but just ask in good faith."

Does this mean that we should or should not name new groups "Hacker Hours"?