Add boot script and information on faster boot

boot_scripts/README.md

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+# PiStorm on Pi Boot
+
+## Bootup script
+
+To start PiStorm on automatically on boot, copy this file into /etc/systemd/system/ in your Pi's filesystem. Then run:
+
+```bash
+sudo systemctl enable pistorm
+```
+
+This script will start PiStorm *before* the network connections have started.
+
+## Faster boot
+
+The Pi does several things that aren't needed for PiStorm at bootup, the following steps will accelerate the boot time for you.
+
+### config.txt
+
+Edit `/boot/config.txt` and add the following lines:
+
+```ini
+# Disable the rainbow splash screen
+disable_splash=1
+
+# Set the bootloader delay to 0 seconds. The default is 1s if not specified.
+boot_delay=0
+
+# Disable Bluetooth
+dtoverlay=disable-bt
+```
+
+By default there is a 1 second boot delay and initialising bluetooth takes a couple of seconds.
+
+### cmdline.txt
+
+Edit the `/boot/cmdline.txt` and add `quiet` near the end, as an example (do **NOT** copy/paste this line):
+
+```
+console=serial0,115200 console=tty1 root=PARTUUID=5f1219ae-02 rootfstype=ext4 elevator=deadline fsck.repair=yes quiet rootwait
+```
+
+This shaves a little time off spitting out boot logs to the screen.
+
+### fstab
+
+Disable `/boot` remount on boot, this will mean you will need to do `sudo mount /boot` when you want to change files in that partition, but it shaves off half a second from boot. To do this add `noauto` to the options second for the `/boot` line, for example (do **NOT** copy/paste this line):
+
+```
+PARTUUID=5f1219ae-01  /boot           vfat    defaults,noauto          0       2
+```
+
+### Disable swap
+
+If we need swap something went wrong. This shaves about another second off the boot time:
+
+```bash
+sudo systemctl disable dphys-swapfile.service
+```

boot_scripts/pistorm.service

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+[Unit]
+Description=PiStorm emulator
+StartLimitIntervalSec=0
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=1
+User=root
+ExecStart=/home/pi/pistorm/emulator
+WorkingDirectory=/home/pi/pistorm
+
+[Install]
+WantedBy=multi-user.target
+