* Remove all Makefiles from the keyboards directory.
* update keymaps added in the last 8 days
* Ignore keyboard/keymap makefiles
* update hand_wire to reflect our new Makefile-less reality
* Update the make guide to reflect the new reality
* move planck keymap options to rules.mk
* update planck keymaps 4real
* trigger travis
* add back build_keyboard.mk
* restore changes to build_keyboard
Update existing keymaps to enable MIDI_BASIC functionality. Also added
an option MIDI_ENABLE_STRICT to be strict about keycode use (which also
reduces memory footprint at runtime)
