Keyboard: Blockey refactor (#3722)

* Matrix refactor

Edited for readability.

* Keymap refactor

Deleted TMK-syntax macro block. Edited for readability.

* Readme cleanup

Edited image link (link previously referenced a single-image album).

* Configurator support

keyboards/blockey/blockey.h

@@ -18,6 +18,9 @@
 
 #include "quantum.h"
 
+// readability
+#define XXX KC_NO
+
 // This a shortcut to help you visually see your layout.
 // The following is an example using the Planck MIT layout
 // The first section contains all of the arguments
@@ -25,21 +28,21 @@
 #define LAYOUT( \
     k01, k02, k03, k04, k05, k06, k07, k08, k09, k10, k11, k12, k13, k14, \
     k15, k16, k17, k18, k19, k20, k21, k22, k23, k24, k25, k26, k27, k28, \
-    k29, k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k40, k41, \
-    k42, k43, k44, k45, k46, k47, k48, k49, k50, k51, k52, k53, k54, \
-    k55, k56, k57, k58, k59, k60, k61, k62 \
+    k29, k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k40,      k41, \
+    k42, k43, k44, k45, k46, k47, k48, k49, k50, k51, k52,      k53, k54, \
+    k55, k56, k57, k58,                k59,                k60, k61, k62  \
 ) \
 { \
     { k01, k02, k03, k04, k05, k06, k07 }, \
     { k15, k16, k17, k18, k19, k20, k21 }, \
     { k29, k30, k31, k32, k33, k34, k35 }, \
     { k42, k43, k44, k45, k46, k47, k48 }, \
-    { k55, k56, k57, k58, KC_NO, KC_NO, k59 }, \
+    { k55, k56, k57, k58, XXX, XXX, k59 }, \
     { k08, k09, k10, k11, k12, k13, k14 }, \
     { k22, k23, k24, k25, k26, k27, k28 }, \
-    { k36, k37, k38, k39, k40, k41, KC_NO }, \
-    { k49, k50, k51, k52, k53, k54, KC_NO }, \
-    { KC_NO, KC_NO, KC_NO, k60, k61, k62, KC_NO}, \
+    { k36, k37, k38, k39, k40, k41, XXX }, \
+    { k49, k50, k51, k52, k53, k54, XXX }, \
+    { XXX, XXX, XXX, k60, k61, k62, XXX }, \
 }
 
 #endif