Tutorial advise to add `.so` file to git

[fryorcraken]

If I understand correctly, see #19, the tutorial advise to add so files to git.

If not added, then it's not picked by nix and the plugin is not built.

This is not great practice, any chance we can make it work without adding the .so to git?

[fryorcraken]

I think that's fine for a first version and we can just have it as a known issue in the doc packet