Adding Joystream Rust Substrate runtime (#647)

Here is more info on the entire project
https://github.com/Joystream/joystream

README.md

@@ -130,6 +130,7 @@ See also [Rust — Production](https://www.rust-lang.org/production)(organizatio
 
 ### Cryptocurrencies
 
+* [Joystream](https://github.com/Joystream/substrate-runtime-joystream) — A user governed video platform.
 * [Bitcoin Satoshi's Vision](https://github.com/brentongunning/rust-sv) — A Rust library for working with Bitcoin SV .
 * [nearprotocol/nearcore](https://github.com/nearprotocol/nearcore) — decentralized smart-contract platform for low-end mobile devices.
 * [ethaddrgen](https://github.com/Limeth/ethaddrgen) — Custom Ethereum vanity address generator made in Rust [<img src="https://api.travis-ci.org/Limeth/ethaddrgen.svg?branch=master">](https://travis-ci.org/Limeth/ethaddrgen)