Keyboard: Six Shooter Keyboard (#3598)

* Created base sixshooter configuration

* Added SixShooter basic LED on/off support.

* Updated LED identifier numbers to align with layout identifiers (and IDs on PCB).

* Minor sixshooter documentation cleanup.

* Added sixshooter info.json file.

* Moved sixshooter custom keycodes out of keymaps and into base keyboard files, small documentation tweaks.

* Removed unnecessary boot section size definition.

* Removing CONFIG_H if/define and replacing with #pragma once.

keyboards/sixshooter/keymaps/default/keymap.c

@@ -0,0 +1,42 @@
+/* Copyright 2018 QMK Community
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+#define _BL 0
+#define _FN 1
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Keymap 0: Media Keys
+     * ,-----------.
+     * |Mut| V-| V+|
+     * |---+---+---|
+     * |Prv|Ply|Nxt|
+     * `-----------'
+     */
+  [_BL] = LAYOUT( /* Base */
+    MO(_FN), KC_VOLD, KC_VOLU, \
+    KC_MPRV, KC_MPLY, KC_MNXT  \
+  ),
+  [_FN] = LAYOUT(
+    KC_TRNS, SS_LON, SS_LOFF, \
+    KC_TRNS, KC_TRNS, KC_TRNS
+  ),
+};
+
+void matrix_init_user(void) {
+  /* Default all LEDs to on */
+  sixshooter_led_all_on();
+}