README.md in dyna-0.2.0 vs README.md in dyna-0.2.1.beta1

@@ -72,9 +72,14 @@
     attribute_definition(
       attribute_name: "Subject",
       attribute_type: "S",
     )
 
+    time_to_live_specification(
+      enabled: true,
+      attribute_name: "ttl",
+    )
+
     provisioned_throughput(
       read_capacity_units: 1,
       write_capacity_units: 2,
     )