Merge pull request #408 from DarkEld3r/patch-1

Add Exonum blockchain project (cryptography section)

README.md

@@ -513,6 +513,7 @@ See also [Are we (I)DE yet?](https://areweideyet.com/) and [Rust and IDEs](https
 * [DaGenix/rust-crypto](https://github.com/DaGenix/rust-crypto) — cryptographic algorithms in Rust [<img src="https://api.travis-ci.org/DaGenix/rust-crypto.svg?branch=master">](https://travis-ci.org/DaGenix/rust-crypto)
 * [dnaq/sodiumoxide](https://github.com/dnaq/sodiumoxide) — [libsodium](https://github.com/jedisct1/libsodium) bindings [<img src="https://api.travis-ci.org/dnaq/sodiumoxide.svg?branch=master">](https://travis-ci.org/dnaq/sodiumoxide)
 * [doublify/libblockchain](https://github.com/doublify/libblockchain) — A Blockchain implementation [<img src="https://api.travis-ci.org/doublify/libblockchain.svg?branch=master">](https://travis-ci.org/doublify/libblockchain)
+* [exonum/exonum](https://github.com/exonum/exonum) [[exonum](https://crates.io/crates/exonum)] — extensible framework for blockchain projects [<img src="https://api.travis-ci.org/exonum/exonum.svg?branch=master">](https://travis-ci.org/exonum/exonum)
 * [klutzy/suruga](https://github.com/klutzy/suruga) — a Rust implementation of [TLS 1.2](https://tools.ietf.org/html/rfc5246)
 * [libOctavo/octavo](https://github.com/libOctavo/octavo) — Modular hash and crypto library in Rust [<img src="https://api.travis-ci.org/libOctavo/octavo.svg?branch=master">](https://travis-ci.org/libOctavo/octavo)
 * [rust-hyderabad/mpw-rs](https://github.com/rust-hyderabad/mpw-rs) — Pure Rust implementation of the Master Password password manager [<img src="https://api.travis-ci.org/rust-hyderabad/mpw-rs.svg?branch=master">](https://travis-ci.org/rust-hyderabad/mpw-rs)