ref: Some small doc updates

src/lib.rs

@@ -1,6 +1,6 @@
 //! This crate provides common types for working with the Sentry protocol or the
 //! Sentry server.  It's used by the sentry relay infrastructure as well as the
-//! rust Sentry client/.
+//! rust Sentry client.
 #![warn(missing_docs)]
 extern crate chrono;
 extern crate failure;

src/protocol/v7.rs

@@ -1,4 +1,9 @@
 //! The current latest sentry protocol version.
+//!
+//! Most constructs in the protocol map directly to types here but some
+//! cleanup by renaming attributes has been applied.  The idea here is that
+//! a future sentry protocol will be a cleanup of the old one and is mapped
+//! to similar values on the rust side.
 use std::fmt;
 use std::collections::HashMap;
 use std::net::IpAddr;