fixing readme
fixing readme


Former-commit-id: aa3c2e5b0650beb6fbcfe7230cff1ebd7093cae0
gsarma/PyOpenWorm,gsarma/PyOpenWorm,kaustubhcs/PyOpenWorm,travs/PyOpenWorm,hnunner/PyOpenWorm,openworm/PyOpenWorm,openworm/PyOpenWorm