Plain60 Configurator support and cleanup (#4888)

* Plain60: remove redundant include guard from plain60.h

Superseded by #pragma once.

* Plain60: add Docs links to readme file

* Plain60: Configurator support

keyboards/plain60/info.json

@@ -0,0 +1,79 @@
+{
+  "keyboard_name": "Plain60",
+  "url": "",
+  "maintainer": "maartenwut",
+  "width": 15,
+  "height": 5,
+  "layouts": {
+    "LAYOUT": {
+      "key_count": 65,
+      "layout": [
+        {"label":"k00", "x":0, "y":0},
+        {"label":"k01", "x":1, "y":0},
+        {"label":"k02", "x":2, "y":0},
+        {"label":"k03", "x":3, "y":0},
+        {"label":"k04", "x":4, "y":0},
+        {"label":"k05", "x":5, "y":0},
+        {"label":"k06", "x":6, "y":0},
+        {"label":"k07", "x":7, "y":0},
+        {"label":"k08", "x":8, "y":0},
+        {"label":"k09", "x":9, "y":0},
+        {"label":"k0a", "x":10, "y":0},
+        {"label":"k0b", "x":11, "y":0},
+        {"label":"k0c", "x":12, "y":0},
+        {"label":"k0d", "x":13, "y":0},
+        {"label":"k0e", "x":14, "y":0},
+        {"label":"k10", "x":0, "y":1, "w":1.5},
+        {"label":"k11", "x":1.5, "y":1},
+        {"label":"k12", "x":2.5, "y":1},
+        {"label":"k13", "x":3.5, "y":1},
+        {"label":"k14", "x":4.5, "y":1},
+        {"label":"k15", "x":5.5, "y":1},
+        {"label":"k16", "x":6.5, "y":1},
+        {"label":"k17", "x":7.5, "y":1},
+        {"label":"k18", "x":8.5, "y":1},
+        {"label":"k19", "x":9.5, "y":1},
+        {"label":"k1a", "x":10.5, "y":1},
+        {"label":"k1b", "x":11.5, "y":1},
+        {"label":"k1c", "x":12.5, "y":1},
+        {"label":"k1d", "x":13.5, "y":1, "w":1.5},
+        {"label":"k20", "x":0, "y":2, "w":1.75},
+        {"label":"k21", "x":1.75, "y":2},
+        {"label":"k22", "x":2.75, "y":2},
+        {"label":"k23", "x":3.75, "y":2},
+        {"label":"k24", "x":4.75, "y":2},
+        {"label":"k25", "x":5.75, "y":2},
+        {"label":"k26", "x":6.75, "y":2},
+        {"label":"k27", "x":7.75, "y":2},
+        {"label":"k28", "x":8.75, "y":2},
+        {"label":"k29", "x":9.75, "y":2},
+        {"label":"k2a", "x":10.75, "y":2},
+        {"label":"k2b", "x":11.75, "y":2},
+        {"label":"k2c", "x":12.75, "y":2},
+        {"label":"k2d", "x":13.75, "y":2, "w":1.25},
+        {"label":"k30", "x":0, "y":3, "w":1.25},
+        {"label":"k31", "x":1.25, "y":3},
+        {"label":"k32", "x":2.25, "y":3},
+        {"label":"k33", "x":3.25, "y":3},
+        {"label":"k34", "x":4.25, "y":3},
+        {"label":"k35", "x":5.25, "y":3},
+        {"label":"k36", "x":6.25, "y":3},
+        {"label":"k37", "x":7.25, "y":3},
+        {"label":"k38", "x":8.25, "y":3},
+        {"label":"k39", "x":9.25, "y":3},
+        {"label":"k3a", "x":10.25, "y":3},
+        {"label":"k3b", "x":11.25, "y":3},
+        {"label":"k3c", "x":12.25, "y":3, "w":1.75},
+        {"label":"k3d", "x":14, "y":3},
+        {"label":"k40", "x":0, "y":4, "w":1.25},
+        {"label":"k41", "x":1.25, "y":4, "w":1.25},
+        {"label":"k42", "x":2.5, "y":4, "w":1.25},
+        {"label":"k46", "x":3.75, "y":4, "w":6.25},
+        {"label":"k4a", "x":10, "y":4, "w":1.25},
+        {"label":"k4b", "x":11.25, "y":4, "w":1.25},
+        {"label":"k4c", "x":12.5, "y":4, "w":1.25},
+        {"label":"k4d", "x":13.75, "y":4, "w":1.25}
+      ]
+    }
+  }
+}

keyboards/plain60/plain60.h

@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef PLAIN60_H
-#define PLAIN60_H
-
 #include "quantum.h"
 
 // readability
@@ -25,5 +22,3 @@
 
 void matrix_init_user(void);
 void matrix_scan_user(void);
-
-#endif

keyboards/plain60/readme.md

@@ -9,4 +9,6 @@ Hardware Availability: https://github.com/Maartenwut/plain60-c
 
 Make example for this keyboard (after setting up your build environment):
 
-    make plain60:default
+    make plain60:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).