Add additional comments

src/index.ts

@@ -1,18 +1,40 @@
-import { Fluence } from '@fluencelabs/fluence';
+import { Fluence, KeyPair } from '@fluencelabs/fluence';
 import { krasnodar } from '@fluencelabs/fluence-network-environment';
 import { getRelayTimestamp } from './_aqua/export';
 
+// a node in Krasnodar network to connect to
+// NOTE: please, choose another index for your app :)
 const relay = krasnodar[3];
 
+// private key for own peer
+// NOTE: please, create a new one with `npx aqua create_keypair` command
+const sk = Buffer.from('SVz4T4yW718wt0rziDVOfiv6+WQbS4lvEtJHEieXcAk=', 'base64');
+
 async function main() {
+    // Here is where we create our peer and connect to the network
     await Fluence.start({
+        KeyPair: await KeyPair.fromEd25519SK(sk),
         connectTo: relay,
     });
 
+    // Fluence.getStatus() returns useful information about peer and it's connection
+    console.log('own peer id: ', Fluence.getStatus().peerId);
+    console.log('connected to relay: ', Fluence.getStatus().relayPeerId);
+    console.log('---\n');
+
+    // here we call aqua function from typescript
     const timestamp = await getRelayTimestamp();
     console.log(new Date(timestamp));
 
+    console.log('\n\npress any key to quit...');
+
+    process.stdin.setRawMode(true);
+    process.stdin.resume();
+    process.stdin.on('data', async () => {
+        // Stopping the peer before exiting application \ unit test \ etc is a good practice
         await Fluence.stop();
+        process.exit(0);
+    });
 }
 
 main().catch((err) => console.error(err));