Creates a layouts/ folder for keymaps shared between keyboards (#1609)

* include variables and .h files as pp directives

* start layout compilation

* split ergodoxes up

* don't compile all layouts for everything

* might seg fault

* reset layouts variable

* actually reset layouts

* include rules.mk instead

* remove includes from rules.mk

* update variable setting

* load visualizer from path

* adds some more examples

* adds more layouts

* more boards added

* more boards added

* adds documentation for layouts

* use lowercase names for LAYOUT_

* add layout.json files for each layout

* add community folder, default keymaps for layouts

* touch-up default layouts

* touch-up layouts, some keyboard rules.mk

* update documentation for layouts

* fix up serial/i2c switches

1 files changed, 179 insertions, 0 deletions

diff --git a/layouts/community/ergodox/alexjj/readme.md b/layouts/community/ergodox/alexjj/readme.md
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index 0000000000..4845cbbd91
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+++ b/layouts/community/ergodox/alexjj/readme.md
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+Englishman in New York
+===========================
+
+:microphone: :tea:
+
+About
+------
+
+After using the massdrop configurator to get the basics, I wanted to add a
+little extra to my ergodox. Notably the Hyper hotkey, the press and hold,
+and a way to have my beloved £ :pound: symbol available<sup>[1](#unicode)</sup>. Why not switch to a GB
+layout? Well the computers I use are US keymap'd and I can't always change
+that. Plus I've got used to 2/@ and 3/# and moving to the ergodox was hard
+enough. :sweat_smile:
+
+I started from the default and edited from there as I needed. It's somewhat
+similar to a regular layout, particularly R1 and shift/controls. I ended up
+with a few keys that were blank, so I'm testing out some shortcuts. Alt+F4 for
+quitting things in Windows, is one example, but I felt it was better placed on 
+the 1st layer - in case of fat fingers.
+
+Layout
+-------
+
+![Layout](https://i.imgur.com/4bDwHLS.jpg "Isn't it lovely")
+
+### Base Layer
+
+```
+,--------------------------------------------------.           ,--------------------------------------------------.
+|   ESC  |  1!  |  2@  |  3#  |  4$  |  5%  |  6^  |           |  7&  |  8*  |  9(  |  0)  |  -_  |  +=  |  BkSp  |
+|--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+| Tab    |   Q  |   W  |   E  |   R  |   T  |  {   |           |   }  |   Y  |   U  |   I  |   O  |   P  |  |\    |
+|--------+------+------+------+------+------|  [   |           |   ]  |------+------+------+------+------+--------|
+| Win    |   A  |   S  |   D  |   F  |   G  |------|           |------|   H  |   J  |   K  |   L  |  :;  |  '"    |
+|--------+------+------+------+------+------| Home |           | End  |------+------+------+------+------+--------|
+| LShift |Z/Alt |   X  |   C  |   V  |   B  |      |           |      |   N  |   M  |   ,  |   .  | Alt  | RShift |
+`--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+  |LCtrl | COPY | PASTE| Left | Right|                                       | Down |  Up  |Hyper |  `~  | RCtrl |
+  `----------------------------------'                                       `----------------------------------'
+                                       ,-------------.       ,-------------.
+  Hyper = Ctrl+Super+Alt+Shift         | ~L3  |  F5  |       |  F2  | ~L2  |
+                                ,------|------|------|       |------+------+------.
+                                |      |      | PgUp |       | Ins  |      |      |
+                                | Enter| BkSp |------|       |------| ~L1  |Space |
+                                |      |      | PgDn |       | Del  |      |      |
+                                `--------------------'       `--------------------'
+``` 
+
+### Symbol Layer
+
+```
+,--------------------------------------------------.           ,--------------------------------------------------.
+|        |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |           |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |PrintScr|
+|--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+|        |   !  |   @  |   {  |   }  |   |  |      |           |      |   Up |   7  |   8  |   9  |   *  |        |
+|--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+|        |   #  |   $  |   (  |   )  |   `  |------|           |------| Down |   4  |   5  |   6  |   +  |        |
+|--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+|        |   %  |   ^  |   [  |   ]  |   ~  |      |           |      |   &  |   1  |   2  |   3  |   \  |        |
+`--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+  |      |   £  |      |      |      |                                       |      |    . |   0  |   =  |Alt+F4|
+  `----------------------------------'                                       `----------------------------------'
+             ↑                         ,-------------.       ,-------------.
+          THERE!                       |      |      |       |      |      |
+                                ,------|------|------|       |------+------+------.
+   CAD = Ctrl + Alt + Delete    |      |      |      |       |      |      |      |
+                                |      |      |------|       |------|      |      |
+                                |      |      |      |       | CAD  |      |      |
+                                `--------------------'       `--------------------'
+```
+### Media Layer
+
+Not touched this, not used either.
+
+```
+,--------------------------------------------------.           ,--------------------------------------------------.
+| TEENSY |      |      |      |      |      |      |           |      |      |      |      |      |      |        |
+|--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+|        |      |      | MsUp |      |      |      |           |      |      |      |      |      |      |        |
+|--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+|        |      |MsLeft|MsDown|MsRght|      |------|           |------|      |      |      |      |      |  Play  |
+|--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+|        |      |      |      |      |      |      |           |      |      |      | Prev | Next |      |        |
+`--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+  |      |      |      | Lclk | Rclk |                                       |VolDn |VolUp | Mute |      |      |
+  `----------------------------------'                                       `----------------------------------'
+                                       ,-------------.       ,-------------.
+                                       |      |      |       |      |      |
+                                ,------|------|------|       |------+------+------.
+                                |      |      |      |       |      |      |Brwser|
+                                |      |      |------|       |------|      |Back  |
+                                |      |      |      |       |      |      |      |
+                                `--------------------'       `--------------------'
+```
+### Unicode Layer
+
+Used to enter/test unicode input on Windows. All numbers are numpad keys.
+
+```
+,--------------------------------------------------.           ,--------------------------------------------------.
+|  Alt   |  1   |   2  |  3   |  4   |   5  |  6   |           |   7  |  8   |   9  |  0   |  +   |  +   |        |
+|--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
+|  Alt   |      |      |   E  |      |      |      |           |      |      |   7  |   8  |  9   |  +   |        |
+|--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+|  Alt   |   A  |      |   D  |   F  |      |------|           |------|      |   4  |   5  |  6   |  +   |        |
+|--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
+|  Alt   |      |      |   C  |      |   B  |      |           |      |      |   1  |   2  |  3   |  +   |        |
+`--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
+  | Alt  |  Alt | Alt  |      |      |                                       |   0  |   0  |  0   |  +   |       |
+  `----------------------------------'                                       `----------------------------------'
+                                       ,-------------.       ,-------------.
+     WINDOWS ONLY SETUP!!              | ~L3  |      |       |      |      |
+                                ,------|------|------|       |------+------+------.
+                                |      |      |      |       |      |      |      |
+                                |  Alt |  Alt |------|       |------|  Alt | Alt  |
+                                |      |      |      |       |      |      |      |
+                                `--------------------'       `--------------------'
+```
+
+
+Usage
+------
+
+~L1 / L2 / L3 will momentarily switch to a layer if held and another key is pressed.
+If pressed and released will remain on layer until pressed again.
+
+### Unicode
+
+This layout is for Windows only. To enter a character Press and Hold Alt, type + and hex code then release Alt.
+
+Changelog
+-----------
+
+### [0.2.1] - 2016-04-05
+
+* Changed £ to alt code in Windows. Windows sucks at unicode.
+
+### [0.2.0] - 2016-03-27
+
+* Added unicode layer
+* Moved Copy/Paste to left hand side
+* Switched Enter and Space (again)
+* Added L3 (unicode layer) toggle
+* Removed Press and Hold for Alt on right hand size (/)
+* Swapped Volume Up/Down to match arrows
+* Tried fixing £ macro
+* Removed * in the matrix function things (upstream change)
+
+### [0.1.1] - 2016-03-23
+
+* Changed £ input to a macro
+
+
+### [0.1.0] - 2016-03-22
+
+After actually using the keyboard, I've made some changes:
+
+* Swapped Enter and Space
+* Moved backspace to thumb keys (top right still remains)
+* Added Ctrl+Alt+Delete
+* Added Teensy Reset on 2nd layer
+* Switched Up and Down
+* Changed copy/paste to be Ctrl+c and Ctrl+v as KC_COPY/PASTE didn't work (in Windows)
+* Moved ~L2 to replace +L1 after learning how the function works (notes above)
+* Hopefully fixed GBP symbol (unicode enabled in MakeFile)
+
+### [0.0.1] - 2016-03-21
+
+First version
+
+
+Issues
+-------
+
+Space for feedback and notes for future improvements
+
+----
+<sup><a name="unicode">1</a></sup>: For Windows only, and you have to edit the [registry](https://en.wikipedia.org/wiki/Unicode_input#Hexadecimal_code_input).