update readme

examples/don/README.md

@@ -5,10 +5,19 @@ This package shows a high level integration with DONs.
 Multiple nodes are created for serving multiple DONs. 
 Each node is composed of the following components:
 - p2p agent integrated with grpc (`../api/grpc/*`)
-- orchestrator (`./lib/node.go`) to manage the internal processes within the node
+- node orchestrator (`./lib/node.go`) to manage the internal processes within the node
 - producer (`./lib/transmitter.go`) to publish messages
 - message consumer (`./lib/consumer.go`)
 - verifier (`./lib/verifier.go`) and signer (`./lib/signer.go`) to verify and sign messages
 
-The nodes are connected to each other via a local p2p network.
-A boostrapper node (kad DHT) is used for peer discovery, providing an entry point to the network.
+
+Within `./tests`, you can find the following tests:
+
+**Local Test**
+
+This test creates a local network of nodes and sends messages between them.
+A boostrapper node (kad DHT) is used for peer discovery.
+
+DON orchestrator (`./tests/testdon.go`) is used to manage the DONs and mock consensus rounds that produces dummy reports from a central location, which is helpful for testing.
+
+`Sha256Signer` is used for signing/verifying messages, it doesn't rely on keys and is used for testing with key infrastructure.