Add Module level docs

Author: G8XSU

src/lib.rs

@@ -1,6 +1,16 @@
+//! Client-side library to interact with Versioned Storage Service (VSS).
+
 #![deny(rustdoc::broken_intra_doc_links)]
 #![deny(rustdoc::private_intra_doc_links)]
 
+use crate::client::VssClient;
+use crate::error::VssError;
+
+/// Implements a thin-client [[`VssClient`]] to access a hosted instance of Versioned Storage Service (VSS).
 pub mod client;
+
+/// Implements the error type [[`VssError`]] returned on interacting with [`VssClient`]
 pub mod error;
+
+/// Contains request/response types generated from API definition of VSS.
 pub mod types;