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

layouts/community/ergodox/colemak_programmer/readme.md

@@ -0,0 +1,23 @@
+# ErgoDox EZ colemak_programmer
+
+## Features
+
+* Qwerty and colemak 2 in 1
+  * Use DF() macro to swap the bottom layer so it behaves literally as collemak or qwerty
+  * Graphical creator did not allow this so I had to use TO(0) and TO(1) on the picture
+* Symbol layer programmers friendly
+  * Not only symbols are easy to access but common combination are easy too: ->, =>, !=, etc.
+* Windows and Mac
+  * The extra repeated Win key is very handy on Mac
+* Numlock
+
+I came to this layout after several iterations. It is not the ultimate best ergonomic layout but it is the best if you switch back and forth between ergodox and laptops.
+
+## Notes
+* The Quote and Enter can be swapped
+* If you use sculpted key caps try turning the bottom key 180 degrees so it became very comfortable to type with thumb.
+
+Alternatively view the [graphical creator version](http://configure.ergodox-ez.com/keyboard_layouts/kmevwm/edit) but beware it is not the same due to the creator limitations.
+
+![Default](https://i.imgur.com/BCJEoKw.jpg)
+![Default](https://i.imgur.com/0P1jBph.jpg)