Add Nimiq to cryptocurrency projects

README.md

@@ -152,6 +152,7 @@ See also [Rust — Production](https://www.rust-lang.org/production)(organizatio
 * [ChainX](https://github.com/chainx-org/ChainX) — Fully Decentralized Interchain Crypto Asset Management on Polkadot.
 * [rbtc](https://github.com/lucawen/rbtc) — Convert BTC to any currency and vice-versa. [<img src="https://api.travis-ci.com/lucawen/rbtc.svg?branch=master">](https://travis-ci.com/lucawen/rbtc/)
 * [wagu](https://crates.io/crates/wagu) — Generate a wallet for any cryptocurrency [<img src="https://api.travis-ci.com/ArgusObserver/wagu.svg?branch=master">](https://api.travis-ci.com/ArgusObserver/wagu.svg?branch=master)
+* [Nimiq](https://github.com/nimiq/core-rs) — Rust implementation of Nimiq node
 
 ### Database