Look for the 'manual' tab here: https://blackfire.io/docs/24-days/06-installation#installation-on-your-local-computers
I just installed your tools on OSX using MAMP Pro and have some feedback. The installation wasn't very straightforward.
The documentation provided was perfect for the agent and the CLI tools. But, it fell quite short for the probe installation: https://blackfire.io/docs/up-and-running/installation#install-probe-osx