Detect memory write error and display appropriate message

[NoahAndrews]

See here: https://www.reddit.com/r/olkb/comments/5i18ze/qmk_firmware_flasher_memory_write_error/db4ljlt/

Until Jack gets a webpage set up, probably best to instruct users to email him.

[skullydazed]

We should probably create a wiki page over on the qmk_firmware repo and point users there. That page can say to email Jack for now, but in the future it can have more information.

@jackhumbert what do you think?

[jackhumbert]

I put up a quick page for this - hopefully we can get together a full guide for how to do this down the road. I gotta think through more of the logistics of a ISP flasher sharing program, but I'll include details for that when I get things put together.

On a general note, I know I don't stop by here very often, but I really appreciate your guys' work on all of this - things are really looking great :)