readme: indicate there is no persistence yet. (#36)

carllerche · web-flow · commit 4bc7af44550a · 2020-04-15T13:37:21.000-07:00
diff --git a/README.md b/README.md
@@ -68,6 +68,7 @@ cargo run --bin cli get foo
 The Redis wire protocol specification can be found
 [here](https://redis.io/topics/protocol).
 
+There is no support for persistence yet.
 
 ## Tokio patterns
 
