Steps to get Drumgizmo running on Mac

(Thanks to sch and PernelCanic for these steps)

1. I download the archive,
2. Unpack it and put in the ~/Library/Plugins/VST directory
3. Rename drumgizmo to drumgizmo.vst
4. Run the following command inside that directory:
   • `sudo xattr -rd com.apple.quarantine drumgizmo.vst`

This approach has been verified running in Reaper.