* swap KC_LALT with KC_LGUI
* replace KC_RALT with KC_RGUI
This makes the keyboard more mac friendly out of the box (I'm aware this
that this could partially be done in software with the preferences but
hey, where's the fun in that).
Renamed keyboard alt67 to alt and adjusted necessary files where alt67 appeared.
CTRL keymap fixed enum structure name.
usb2422 removed stray define no longer used.
* Massdrop keyboards readme update
Massdrop keyboards readme update for flashing instructions
* ctrl and alt keyboard readme update
Updating make command in Massdrop CTRL and ALT keyboard readme files to reflect directory change
