Update README.md

Author: levkk

README.md

@@ -13,7 +13,7 @@ Meow. PgBouncer rewritten in Rust, with sharding, load balancing and failover su
 1. Install Rust (latest stable will work great).
 2. `cargo build --release` (to get better benchmarks).
 3. Change the config in `pgcat.toml` to fit your setup (optional given next step).
-4. Install Postgres and run `psql -f tests/sharding/query_routing_setup.sql`
+4. Install Postgres and run `psql -f tests/sharding/query_routing_setup.sql` (user/password may be required depending on your setup)
 5. `cargo run --release` You're ready to go!
 
 ### Tests