I followed the instructions to install, but once I try to run exercism, it gives the following error: " “exercism” can’t be opened because Apple cannot check it for malicious software.
This software needs to be updated. Contact the developer for more information."
I think (I don’t recall exactly) that you need to tell your Mac that this executable is OK. Find it in Finder, right-click and select Open. At that time you should be able to specify that you want to open it.
Let us know if this works and we can update the instructions.