Add example files for using with systemd

[tarkatronic]

Fixes #24

[codecov]

Codecov Report

Merging #73 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #73   +/-   ##
=======================================
  Coverage   72.58%   72.58%           
=======================================
  Files           9        9           
  Lines         434      434           
  Branches       54       54           
=======================================
  Hits          315      315           
  Misses        114      114           
  Partials        5        5

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