update via usethis::use_license_CC0

DESCRIPTION

@@ -15,7 +15,7 @@ Authors@R: c(
   )
 Maintainer: Rob Baker <[email protected]>
 Description: This package will be of most use to the U.S. National Park Service data scientists and managers seeking to generate EML-formatted metadata for datapackages. EML-formatted .xml files are typically constructed using EDI's EMLassemblyline package and then imported as an R-object using the EML package. EMLeditor allows the user to view the contents of the R object and add/edit aspects of metadata crucial for publication in the U.S. National Park Service DataStore repository. For instance, a user can view and edit a DOI, a link to a DRR, Park Unit connections, information about Confidential Unclassified Information (CUI), and more. EMLeditor allows the user to write a mockup of a README.txt to preview what the README automatically generated by DataStore upon upload will look like.
-License: MIT + file LICENSE
+License: CC0
 BugReports: https://github.com/nationalparkservice/EMLeditor/issues
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)