Add os/arch/apple-keyboard-bt

os/arch/apple-keyboard-bt/README.md

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+# Apple Keyboard auto connecting service
+
+The btkbd service auto-connects the wireless Apple Keyboard to Arch Linux.
+
+The keyboard must be paired and trusted before the btkbd service will work:
+
+```
+$ bluetoothctl -a
+[bluetooth]# power on
+[bluetooth]# agent KeyboardOnly
+[bluetooth]# default-agent
+[bluetooth]# pairable on
+[bluetooth]# scan on
+[bluetooth]# pair <MAC ADDRESS OF KBD>
+[bluetooth]# trust <MAC ADDRESS OF KBD>
+[bluetooth]# connect <MAC ADDRESS OF KBD>
+[bluetooth]# quit
+```
+
+Then run `./install` to set up the service.

os/arch/apple-keyboard-bt/btkbd.conf

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+# Config file for btkbd.service
+BTKBDMAC = ''00:25:BC:FA:22:C0''
+HCIDEVICE = 'hci0'

os/arch/apple-keyboard-bt/btkbd.service

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+[Unit]
+Description=systemd Unit to automatically start a Bluetooth keyboard
+Documentation=https://wiki.archlinux.org/index.php/Bluetooth_Keyboard
+Requires=dbus-org.bluez.service
+After=dbus-bluez.org.service
+ConditionPathExists=/etc/btkbd.conf
+ConditionPathExists=/usr/bin/hcitool
+ConditionPathExists=/usr/bin/hciconfig
+
+[Service]
+Type=oneshot
+EnvironmentFile=/etc/btkbd.conf
+ExecStart=
+ExecStart=/usr/bin/hciconfig ${HCIDEVICE} up
+# ignore errors on connect, spurious problems with bt? so start next command with -
+ExecStart=-/usr/bin/hcitool cc ${BTKBDMAC}
+
+[Install]
+WantedBy=multi-user.target

os/arch/apple-keyboard-bt/install

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+#!/usr/bin/env bash
+
+# Bluetooth
+sudo ln -s $PWD/services/btkbd.conf /etc/
+sudo ln -s $PWD/services/btkbd.service /etc/systemd/system/
+
+# Install service
+sudo systemctl enable btkbd.service
+sudo systemctl start btkbd.service
+
+# Turn off FN mode
+bash -c 'echo 2 > /sys/module/hid_apple/parameters/fnmode'