LittleCube

Add GateKeeper instructions for macOS to README

2

Here you go. Let me know if you have any questions or editions you want me to make.

solution for Mac's "developer cannot be verified" message

2

I don't know if this will end up helping anyone, but on Mac, if you didn't disable GateKeeper (running `sudo spctl --master-disable` in Terminal and selecting Allow Apps from: "Anywhere"...