Echo example with libp2p

This example performs a simple echo from the listener to the dialer.

Setup

1. Install the modules from libp2p root, npm install and npm run build.
2. Open 2 terminal windows in the ./src directory.

Running

1. Run the listener in window 1, node listener.js
2. Run the dialer in window 2, node dialer.js
3. You should see console logs showing the dial, and the received echo of hey
4. If you look at the listener window, you will see it receiving the dial