[Erez & Jack] Documents audio output

Update build guide with instructions to copy the whole keymap folder (#315)

Backlight Breathing for Planck and Atomic

* Updated personal layouts

* tweaked personal

* Nightly - Audio Cleanup

Refactored the LUTs. Abstracted some of the registers out of audio to
use more functional names. Split audio into audio and audio_pwm. WIP

* nightly - collapsed code

* Added check for note playing to LEDs

* Usability tweaks

* TWEAE

* nightly

added extra kcs to keymap common

* turned on Plank audio

* Added backlight breathing to atomic

* reverted accidental merge

* adds backlight pulse to planck

quantum accommodates more than 16 columns

Adds next tab/prev tab back to symb layer and updates legend

A little more tweaking

Tweaks layers 1 & 2 in my experimental layout

Merge pull request #311 from adiabatic/ergodox-zweihander-osx

Add KC_LABK and KC_RABK (< and >)

Add KC_L[LR]ABK to top-level README

Merge pull request #310 from nrrkeene/master

Lock layers by pressing both shift keys

Rearrange code layer on Zweihander

Makes it more like the iOS keyboard (and therefore easier to remember). Also adds angle brackets for HTML and comparisons.

Add KC_LABK and KC_RABK (< and >)

zweihander: add ⌘X, ⌘C, ⌘V to media thumb keys

The Ordinary Layout is the layout you are looking for. Come and see.

The Ordinary Layout is extraordinarily familiar and powerful

Uses @eltang's famous macro! Still not perfect though :(

[Erez & Jack] Updates docs with one-shot information and config_user.h

[Jack & Erez] Defines MOD_HYPR and MOD_MEH

[Jack & Erez] Creates a makefile.mk and a config file for the experimental layout

[Jack & Erez] Enables config_user.h per keymap