Added "How to Make a Board Game"

Ah, 2018. The year I tried to do Whimsy Machine full time without processing the bonkers hangups I still had from SGP. For six months, I fumbled about in various communities, did a few workshops, launched a few games. And then all my savings ran out, and I got a day job in finance. How to Make a Board Game was a presumptuous workshop I ran at a local gallery for a handful of interested parties. While this document is my outline and doesn't contain the wealth of my knowledge, it still makes for a good framework with some decent leading questions. The game design challenges linked at the end are hilariously dated though—all defunct. Game Chef and 200 Word RPG were huge for me early on, though, so I like them in there as reminders. I'd actually forgotten about the others. This is a little early incentive before we reach our first goal. I'll post some other devlogs for the other games too along the way.