update README.md

Author: cassc

README.md

@@ -3,4 +3,9 @@ A series of tutorials for developing Ethereum in Rust
 - [Part 1](https://medium.com/@august2079/ethereum-with-rust-tutorial-part-1-create-simple-transactions-with-rust-26d365a7ea93): Ethereum with Rust Tutorial Part 1: Create simple transactions with Rust
 - [Part 2](https://medium.com/@august2079/ethereum-with-rust-tutorial-part-2-compile-and-deploy-solidity-contract-with-rust-c3cd16fce8ee): Ethereum with Rust Tutorial Part 2: Compile and Deploy Solidity Contract with Rust
 
+Examples can be run from cargo: 
+
+``` bash
+cargo run --bin part-[n]
+```