lacking accurate details for connecting to cassandra db

I have been trying to implement rulio with a database, but I am facing problem due to lack of documentation of actual connection to the database.
I followed the documentation and changed the storage to "cassandra" and storage-config to "127.0.0.1", yet I receive an error:
go run main.go storage > engine.log
panic: bad type for nodes [127.0.0.1] (string); should be []interface{}.
How do I put the address as an interface?

Review the existing documentation for Cassandra storage configuration and reproduce the reported `go run main.go storage` error with `127.0.0.1`. Clarify the expected address or nodes format and update the connection instructions; done when a user can configure Cassandra without the reported type error.

Written by the indexing model from the issue text.