force-md custommetadata new [filename]... [flags]

$ force-md custommetadata new src/customMetadata/My_Metadata.Example.md -l 'My Example' -v '{My_Field__c: "My Value", Default__c: true}'

  -h, --help            help for new
  -l, --label string    label
  -v, --values string   object describing values

      --convert-xml-entities   convert numeric xml entities to character entities (default true)
      --silent                 show errors only
      --verbose                show debugging output