[se-edu#63] add additional option for LO-1KLoC (se-edu#63)

README.md

@@ -450,6 +450,7 @@ Some suggested enhancements:
 * Make the `find` command case insensitive e.g. `find john` should match `John`
 * Add a `sort` command that can list the persons in alphabetical order
 * Add an `edit` command that can edit properties of a specific person
+* Add an additional field (like date of birth) to the person record
 
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 # Contributors