update readme (#37)

README.md

@@ -2,12 +2,14 @@
 
 This is a simple open-source data wrapper that bridges the gap between your Postgres database and [Clerk](https://clerk.com/) a leading user management solution. For more info, check out the [blog post](https://tembo.io/blog/clerk-fdw/)!
 
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+
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 ## Prerequisites
 
-- have the v0.2.7 of `clerk_fdw` extension enabled in your instance
+- have the v0.3.2 of `clerk_fdw` extension enabled in your instance
 
 Create the foreign data wrapper:
 
@@ -89,7 +91,7 @@ options (
 );
 ```
 
-NOTE: There is a 0.5-second sleep timer between each request so that we do not overload clerk servers. The response might take a while, and it is recommended that you store the information in a local table for quick access.
+NOTE: This query requires us to loop through all organizations. In case if we get rate-limited, the fdw implements exponential backoff with a max_interval of 15 minutes. The response might take a while, and it is recommended that you store the information in a local table for quick access.
 
 Query from the Foreign Table:
 `select * from clerk_users`