Fix XML empty element handling

Change-Id: I80a1653685e221731f9be889b2794f3bc6a38cf2
diff --git a/cmd/datok.go b/cmd/datok.go
index 66bc7e9..d9a71f0 100644
--- a/cmd/datok.go
+++ b/cmd/datok.go
@@ -103,4 +103,6 @@
 		dat.TransduceTokenWriter(os.Stdin, tw)
 		tw.Flush()
 	}
+
+	fmt.Println("\n")
 }