added demo

demo/key.js

@@ -0,0 +1,9 @@
+import { createStacksPrivateKey, makeRandomPrivKey, getPublicKey } from '@blockstack/stacks-transactions';
+
+// Random key
+const privateKey = makeRandomPrivKey();
+// Get public key from private
+const publicKey = getPublicKey(privateKey);
+
+console.log({privateKey, publicKey})
+

demo/transaction1.js

@@ -0,0 +1,30 @@
+import {
+  makeSTXTokenTransfer,
+  makeStandardSTXPostCondition,
+  broadcastTransaction,
+} from '@stacks/transactions';
+import { StacksTestnet, StacksMainnet } from '@stacks/network';
+const BigNum = require('bn.js');
+
+// for mainnet, use `StacksMainnet()`
+const network = new StacksTestnet();
+
+const txOptions = {
+  recipient: 'SP3FGQ8Z7JY9BWYZ5WM53E0M9NK7WHJF0691NZ159',
+  amount: new BigNum(12345),
+  senderKey: 'b244296d5907de9864c0b0d51f98a13c52890be0404e83f273144cd5b9960eed01',
+  network,
+  memo: 'test memo',
+  nonce: new BigNum(0), // set a nonce manually if you don't want builder to fetch from a Stacks node
+  fee: new BigNum(200), // set a tx fee if you don't want the builder to estimate
+  anchorMode: AnchorMode.Any
+};
+
+const transaction = await makeSTXTokenTransfer(txOptions);
+
+// to see the raw serialized tx
+const serializedTx = transaction.serialize().toString('hex');
+
+// broadcasting transaction to the specified network
+broadcastTransaction(transaction, network);
+

package.json

@@ -1,4 +1,5 @@
 {
+  "type": "module",
   "name": "stacks.js",
   "version": "1.4.1",
   "private": true,
@@ -26,7 +27,10 @@
     "typedoc": "^0.20.35",
     "typescript": "^4.2.4"
   },
-  "dependencies": {},
+  "dependencies": {
+    "@blockstack/stacks-transactions": "^0.7.0",
+    "@stacks/transactions": "^2.0.0-beta.1"
+  },
   "scripts": {
     "bootstrap": "lerna bootstrap",
     "build": "lerna run build",