docs: add examples from polkadot

docs/examples/rx/06_make_transfer/README.md

@@ -0,0 +1,5 @@
+# Make a simple transfer
+
+This sample shows how to create a transaction to make a transfer from one an account to another.
+
+<<< @/docs/examples/rx/06_make_transfer/index.js

docs/examples/rx/06_make_transfer/index.js

@@ -1,21 +1,19 @@
 // Import the API, Keyring and some utility functions
-const { ApiPromise } = require('@polkadot/api');
+const { ApiRx } = require('@polkadot/api');
 const { Keyring } = require('@polkadot/keyring');
-const { stringToU8a } = require('@polkadot/util');
 
-const ALICE_SEED = 'Alice'.padEnd(32, ' ');
-const BOB_ADDR = '5Gw3s7q4QLkSWwknsiPtjujPv3XM4Trxi5d4PgKMMk3gfGTE';
+const BOB = '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty';
 
 async function main () {
-  // Create an instance of the keyring
-  const keyring = new Keyring();
-
-  // Add Alice to our keyring (with the known seed for the account)
-  const alice = keyring.addFromSeed(stringToU8a(ALICE_SEED));
-
   // Instantiate the API
   const api = await ApiRx.create().toPromise();
 
+  // Create an instance of the keyring
+  const keyring = new Keyring({ type: 's25519' });
+
+  // Add Alice to our keyring (with the known seed for the account)
+  const alice = keyring.addFomUri('//Alice');
+
   //  Create a extrinsic, transferring 12345 units to Bob.
   api.tx.balances
     // create transfer
@@ -23,11 +21,11 @@ async function main () {
     // Sign and send the transcation
     .signAndSend(alice)
     // Subscribe to the status updates of the transfer
-    .subscribe(({ status, type }) => {
-      if (type === 'Finalised') {
-        console.log(`Successful transfer of 12345 from Alice to Bob with hash ${status.asFinalised.toHex()}`);
+    .subscribe(({ status }) => {
+      if (status.isFinalized) {
+        console.log(`Successful transfer of 12345 from Alice to Bob with hash ${status.asFinalized.toHex()}`);
       } else {
-        console.log(`Staus of transfer: ${type}`);
+        console.log(`Staus of transfer: ${status.type}`);
       }
     });
 }

docs/examples/rx/06_make_transfer/package.json

@@ -10,7 +10,7 @@
     "start": "node index.js"
   },
   "dependencies": {
-    "@polkadot/api": "^0.43.6"
+    "@polkadot/api": "^0.53.1"
   },
   "devDependencies": {
     "rimraf": "^2.6.2"