updating .gitignore
updating .gitignore


Former-commit-id: b818a4dca2dfda06ae1946e8dc00983263044075
hnunner/PyOpenWorm,travs/PyOpenWorm,gsarma/PyOpenWorm,openworm/PyOpenWorm,openworm/PyOpenWorm,kaustubhcs/PyOpenWorm,gsarma/PyOpenWorm