Enable deploying code for the raspberry pis

Also, sets up a systemd service to start all the code.

Change-Id: If993426b36d0910497579ad86e330699f8a7d2e7
diff --git a/y2020/vision/rootfs/frc971.service b/y2020/vision/rootfs/frc971.service
new file mode 100644
index 0000000..bf42652
--- /dev/null
+++ b/y2020/vision/rootfs/frc971.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Start up 971 robot code
+
+[Service]
+Type=oneshot
+ExecStart=su pi -c /home/pi/robot_code/starter.sh
+
+[Install]
+WantedBy=multi-user.target