Added vars to makefile for setting Python dirs from command-line.
Merge pull request #31 from NHDaly/makefileOSX_python_fix

Fix OSX non-homebrew python install: Added vars to makefile for setting dirs from command-line (to dev branch).
Switched the ifdefs to address issue #39.
Merge pull request #43 from NHDaly/development

Switched the ifdefs to address issue #39.
IMPORTANT FIX. In configuraion load function was a absolut path to file with membranes.
Merge pull request #44 from openworm/development

Development