Add rustdoc logo/root link config to sub-crates

This is necessary even for the test crate to prevent spurious errors:
deadlinks/cargo-deadlinks#36

rand_jitter/src/lib.rs

@@ -40,6 +40,14 @@
 //!
 //! [Jitterentropy]: http://www.chronox.de/jent.html
 
+#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk.png",
+       html_favicon_url = "https://www.rust-lang.org/favicon.ico",
+       html_root_url = "https://rust-random.github.io/rand/")]
+
+#![deny(missing_docs)]
+#![deny(missing_debug_implementations)]
+#![doc(test(attr(allow(unused_variables), deny(warnings))))]
+
 // Note: the C implementation of `Jitterentropy` relies on being compiled
 // without optimizations. This implementation goes through lengths to make the
 // compiler not optimize out code which does influence timing jitter, but is

tests/wasm_bindgen/src/lib.rs

@@ -1,3 +1,15 @@
+// Copyright 2018 Developers of the Rand project.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Crate to test WASM with the `wasm-bindgen` lib.
+
+#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk.png")]
+
 extern crate rand;
 extern crate wasm_bindgen;
 extern crate wasm_bindgen_test;