Recommend running dbck when upgrading from 2.0.0.

README

@@ -143,6 +143,13 @@ AUTHORS			List of authors.
 4. Database Versions -- you may have to convert the database
 ============================================================
 
+The database format has not changed in the 2.0.1 release.  However,
+there was a bug in the 2.0.0 release that may have caused the database
+to contain errors.  They can be fixed by dbck; please run this command
+if you are upgrading from the 2.0.0 release:
+
+	dbck -i
+
 lyskomd version 2.0.0 uses a new file format for the database. If you
 have been running earlier versions of lyskomd you must convert the
 database by issuing the following command: