--user install doesn't work on Mac

[bobh0303]

I tried following the --user install instructions on Mac (10.12.5 (16F73)) and while it seemed to work fine, the installed files were not locatable on the path.

Files were installed into /Users/bobh/Library/Python/2.7/bin/, PATH is /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/bobh/bin

Either further instructions are needed (e.g., the need to update path or add inks from ~/bin) or README.md should not give this as an option for Mac environments.

[nrsiward]

This documentation might be helpful:
https://docs.python.org/3/install/index.html#alternate-installation-the-user-scheme

This might be a handy diagnostics: python -m site