fix qwerty.json
Merge pull request #5 from cesarbp/master

fix qwerty.json
Merge pull request #6 from drbrain/all_usb_keys

Remove magic numbers from atreus.c and layout.h
Update layout_qwerty.h with new macro-based style.
Don't implicitly build from json; use layout_qwerty.h if none is present.
Readme fixes.
Replace reset with Enter on layer 2

I keep hitting reset when selecting an item in LaunchBar