specit deletes systemd unit file from src

[TimUnderhay]

Firstly, thank you for specit!

The title says it all. I have a systemd unit file in my src directory named my-package.service, and when running specit, the the unit file is deleted. This forces me to give the file a .systemd extension and mv it into place with:

     "post": [
        "mv /<installdir>/my-package.systemd /lib/systemd/system/my-package.service"
     ]

I understand that most of the automatic systemd functionality is disabled in specit anyway, which suits me well as I prefer to use my own but I would dearly love for my unit file not to get deleted before I build my rpm :)

[TimUnderhay]

I've submitted a pull request which resolves this.