Cleanup top-level lib doc

src/lib.rs

@@ -1,7 +1,9 @@
 //! The `solana` library implements the Solana high-performance blockchain architecture.
-//! It includes a full Rust implementation of the architecture as well as hooks to GPU
+//! It includes a full Rust implementation of the architecture (see
-//! implementations of its most paralellizable components. It also includes command-line
+//! [Server](server/struct.Server.html)) as well as hooks to GPU implementations of its most
-//! tools to spin up fullnodes and a Rust library `thin_client` to interact with them.
+//! paralellizable components (i.e. [SigVerify](sigverify/index.html)).  It also includes
+//! command-line tools to spin up fullnodes and a Rust library
+//! (see [ThinClient](thin_client/struct.ThinClient.html)) to interact with them.
 //!
 
 #![cfg_attr(feature = "unstable", feature(test))]

src/sigverify.rs

@@ -1,3 +1,9 @@
+//! The `sigverify` module provides digital signature verification functions.
+//! By default, signatures are verified in parallel using all available CPU
+//! cores.  When `--features=cuda` is enabled, signature verification is
+//! offloaded to the GPU.
+//!
+
 use packet::{Packet, SharedPackets};
 use std::mem::size_of;
 use transaction::{PUB_KEY_OFFSET, SIGNED_DATA_OFFSET, SIG_OFFSET};

src/thin_client.rs

@@ -12,6 +12,7 @@ use std::io;
 use std::net::{SocketAddr, UdpSocket};
 use transaction::Transaction;
 
+/// An object for querying and sending transactions to the network.
 pub struct ThinClient {
     requests_addr: SocketAddr,
     requests_socket: UdpSocket,