Hello Alison,
Thanks for using the program! Just to be clear, when you say "via command line", do you mean programming it using Python? If so, the scripting tutorial is for you, but if you mean just using the program (as I demonstrate in the videos) then you'd be better off following this guide (
http://willpearse.github.io/phyloGenerator/guide.html).
If you're going down the Python route, the path to add is "/Applications/phyloGeneratorMac/phyloGenerator.app/Contents/Resources/". If I were you, however, I would just copy phyloGenerator.py and the "requires" folder (both in /Applications/phyloGeneratorMac/phyloGenerator.app/Contents/Resources/) and put them somewhere a bit more convenient. Remember you can open up an application by right-clicking on it and selecting something like "show package contents" (my memory's a bit hazy as I don't have a Mac anymore).
I hope that makes sense - let me know if it doesn't.
Cheers,
Will
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Measuring phylogenetic structure? Try install.packages('pez')
Will PearseAssistant Professor of Biology, Utah State University Skype: will.pearse