Add random.org crates link.

README.md

@@ -858,7 +858,7 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
 * [sfackler/rust-native-tls](https://github.com/sfackler/rust-native-tls) — Bindings for native TLS libraries
 * [sfackler/rust-openssl](https://github.com/sfackler/rust-openssl) — [OpenSSL](https://www.openssl.org/) bindings [![build badge](https://api.travis-ci.org/sfackler/rust-openssl.svg?branch=master)](https://travis-ci.org/sfackler/rust-openssl)
 * [sodiumoxide/sodiumoxide](https://github.com/sodiumoxide/sodiumoxide) — [libsodium](https://github.com/jedisct1/libsodium) bindings [![build badge](https://api.travis-ci.org/sodiumoxide/sodiumoxide.svg?branch=master)](https://travis-ci.org/sodiumoxide/sodiumoxide)
-* [vityafx/randomorg](https://github.com/vityafx/randomorg) - A <https://www.random.org/> client library.
+* [vityafx/randomorg](https://github.com/vityafx/randomorg) - A <https://www.random.org/> client library. [![Crates badge](https://img.shields.io/crates/v/randomorg.svg)](https://crates.io/crates/randomorg)
 * [w3f/schnorrkel](https://github.com/w3f/schnorrkel) - Schnorr VRFs and signatures on the Ristretto group
 
 ### Database