Bug#763036: bzflag-server: please add provided systemd service file

[Alexandre Detiste]

Sorry, there was a typo ( /etc <> /etd )

http://www.freedesktop.org/software/systemd/man/systemd.exec.html

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[Unit]
Description=BZFlag game server
Documentation=man:bzfs(6)
After=network.target

[Service]
Environment="OPTIONS=-advertise NONE"
EnvironmentFile=-/etc/default/bzflag
User=games
Group=games
ExecStart=/usr/games/bzfs $OPTIONS

[Install]
WantedBy=multi-user.target