* Mitor Tweaks
Updating Dvorak keymap to change location of Slash and Backslash
to positions more in line with my 12x5 and similar ortho layouts
* Fixed readme.md
Tidied up the readme and make some minor changes.
* Adding atreus config file
Adding a config file for my Atreus keyboard. This is to help with
the keychatter issues I've been having on my Atreus.
* Changes as requested per @zvecr
Added `#pragma once` to beginning of config.h file as requested
by @zvecr.