💚 revert upgrade to npm 3.x
💚 revert upgrade to npm 3.x

PersonalGenomesOrg/open-humans,PersonalGenomesOrg/open-humans,OpenHumans/open-humans,OpenHumans/open-humans,OpenHumans/open-humans,PersonalGenomesOrg/open-humans,OpenHumans/open-humans,PersonalGenomesOrg/open-humans