Hi,
If your repository is public, yes, you can't include the PlayMaker dll NOR the install package. to play safe, simply move the Global Resource and preference resource our of the PlayMaker folder, and then you can ignore the PlayMaker folder and the plugins folder, and you are good to go.
If you can I can also share a typical gitignore file snippet so that it's all set up for you.
Bye,
Jean