Merge pull request #1 from cvubrugier/master

Fix typo in RPM spec file: s/RM_OPT_FLAGS/RPM_OPT_FLAGS/
Adding systemd support: add svc file and update spec
Added systemd service file to install file list
Make systemd support optional, default off

This makes systemd support optional  in the CMakeLists.txt file,
defaulting to off. Said support is enabled when building through
the spec file.
Merge pull request #17 from gonzoleeman/add-systemd-support

Add systemd support