[WIP] Added support for the b.face keyboard (#2493)

* Added support for the b.face keyboard

This commit adds support for the 60% keyboard from winkeyless, the
b.face. The basic keyboard layout as well as the RGB backlighting
works as expected; the per-key LEDs can be turned on or off but not
yet dimmed. A default 60% US-layout is included.

* Added link to the bface in the ps2avrGB README

keyboards/bface/rules.mk

@@ -0,0 +1,47 @@
+# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
+#
+# 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/>.
+
+# MCU name
+MCU = atmega32a
+PROTOCOL = VUSB
+
+# unsupported features for now
+NO_UART = yes
+NO_SUSPEND_POWER_DOWN = yes
+
+# processor frequency
+F_CPU = 12000000
+
+# build options
+BOOTMAGIC_ENABLE = yes
+MOUSEKEY_ENABLE = yes
+EXTRAKEY_ENABLE = yes
+CONSOLE_ENABLE = no
+COMMAND_ENABLE = yes
+BACKLIGHT_ENABLE = yes
+BACKLIGHT_CUSTOM_DRIVER = yes
+BACKLIGHT_BREATHING = no
+RGBLIGHT_ENABLE = yes
+RGBLIGHT_CUSTOM_DRIVER = yes
+
+OPT_DEFS = -DDEBUG_LEVEL=0
+OPT_DEFS += -DBOOTLOADER_SIZE=2048
+
+# custom matrix setup
+CUSTOM_MATRIX = yes
+SRC = matrix.c i2c.c backlight_ps2avrGB.c
+
+# programming options
+PROGRAM_CMD = ./keyboards/bface/program .build/$(TARGET).hex