* Add carvac_dv keymap for mitosis
* Add mouse keys
* move backspace, etc, and fix tab
* remove commented-out functions in keymap
* Fix scroll buttons and add left/right scrolling
* Make num momentary, add comments, and clean up
* fix mouse scroll acceleration
* Add tab, remove bksp, move print screen
Having tab next to control and alt makes for much easier
alt-tabbing and ctrl-tabbing.
That displaced print screen, but I had never used the non-layer
backspace on the right hand, so I moved printscreen over there.
* 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
