More Makefile updates for the MacOS brew install

Modifying Makefile to ignore errors about missing directories for bre…

…w installs on MacOS

Merge branch 'master' of https://github.com/gtDMMB/GTFoldPython

Merge branch 'master' of https://github.com/gtDMMB/GTFoldPython