Documentation insufficient for installing pythonbrew in non-default location in OSX at least

[benoleary]

Hi, I have had a lot of trouble trying to install pythonbrew in a particular directory on my MacBook. I guess that it's rather trivial, but it turned out that, in the end, I needed to ensure that PYTHONBREW_ROOT AND PYTHONBREW_HOME are BOTH exported in my ~/.bashrc before the pythonbrew/etc/bashrc is sourced.

1. The documentation is not clear that exporting PYTHONBREW_ROOT is more than a once-off.
2. The documentation does not mention PYTHONBREW_HOME at all.

At the very least, I hope that this issue can be found by someone else who might have the same problem as me (though I guess that nobody else in the world actually ever installs to anywhere other than the default directory).

Thanks

[brandon-m-skinner]

You should try doing a pull request with your proposed changes.