[Ifeffit] Mac woes

If someone would like to contribute a write-up on how to install the Mac package and how to troubleshoot the most common problems, that would be helpful. I could then replace the text that exists on the Demeter homepage, which does not appear to be sufficient for many Mac users. B -- Bruce Ravel ------------------------------------ bravel@bnl.gov National Institute of Standards and Technology Synchrotron Science Group at NSLS-II Building 535A Upton NY, 11973 Homepage: http://bruceravel.github.io/home/ Software: https://github.com/bruceravel Demeter: http://bruceravel.github.io/demeter/