Please add native support for systemd

[it-praktyk]

I try use PowerBlock with ARMBIAN 5.27.170421 nightly Ubuntu 16.04.2 LTS 4.10.11-sun8i what uses systemd.

Could you consider add native (an unit file) support for systemd too?

Currently powerblock service is handled by

root@orangepiplus2e:/etc/systemd# systemctl status powerblock
● powerblock.service - LSB: powerblock init script
   Loaded: loaded (/etc/init.d/powerblock; bad; vendor preset: enabled)
   Active: active (running) since Thu 2017-04-20 21:51:03 UTC; 21min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 1916 ExecStop=/etc/init.d/powerblock stop (code=exited, status=0/SUCCESS)
  Process: 1937 ExecStart=/etc/init.d/powerblock start (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/powerblock.service
           └─1944 /usr/bin/powerblock

Apr 20 21:51:03 orangepiplus2e systemd[1]: Starting LSB: powerblock init script...
Apr 20 21:51:03 orangepiplus2e systemd[1]: Started LSB: powerblock init script.