Added Solana as a cryptocurrency project

README.md

@@ -177,6 +177,7 @@ See also [Rust — Production](https://www.rust-lang.org/production) organizatio
 * [Polkadot](https://github.com/paritytech/polkadot) — Heterogeneous multi‑chain technology with pooled security
 * [rbtc](https://github.com/lucawen/rbtc) — Convert BTC to any currency and vice-versa. [![Build Status](https://api.travis-ci.com/lucawen/rbtc.svg?branch=master)](https://travis-ci.com/lucawen/rbtc)
 * [rust-cardano](https://github.com/input-output-hk/rust-cardano) — Rust implementation of Cardano primitives, helpers, and related applications
+* [Solana](https://github.com/solana-labs/solana) — Incredibly fast, highly scalable blockchain using Proof-of-History.
 * [Substrate](https://github.com/paritytech/substrate) — Generic modular blockchain template written in Rust
 * [tendermint-rs](https://github.com/informalsystems/tendermint-rs) - Rust implementation of Tendermint blockchain data structures and clients
 * [wagyu](https://github.com/AleoHQ/wagyu) [[wagyu](https://crates.io/crates/wagyu)] — Rust library for generating cryptocurrency wallets [![build badge](https://api.travis-ci.com/AleoHQ/wagyu.svg?branch=master)](https://api.travis-ci.com/AleoHQ/wagyu.svg?branch=master)