include basic example in readme

README.md

@@ -6,6 +6,91 @@ For the SVM (Solana) contract, see https://github.com/wormholelabs-xyz/example-n
 
 Deployments can be found at https://wormholelabs.notion.site/Executor-Addresses-Public-1f93029e88cb80df940eeb8867a01081
 
+## Example Usage
+
+First, build the contracts to generate the ABI:
+
+```bash
+forge build
+```
+
+Here's a basic example using viem to approve and transfer tokens:
+
+```javascript
+import { createWalletClient, createPublicClient, http, erc20Abi } from "viem";
+import { privateKeyToAccount } from "viem/accounts";
+import { sepolia } from "viem/chains";
+import nttExecutorAbi from "./out/NttManagerWithExecutor.sol/NttManagerWithExecutor.json" assert { type: "json" };
+
+const account = privateKeyToAccount("0x...");
+const publicClient = createPublicClient({
+  chain: sepolia,
+  transport: http("https://your-rpc-url.com"),
+});
+const walletClient = createWalletClient({
+  account,
+  chain: sepolia,
+  transport: http("https://your-rpc-url.com"),
+});
+
+async function transferWithExecutor() {
+  // Contract addresses
+  const tokenAddress = "0x...";
+  const nttManagerAddress = "0x...";
+  const nttManagerWithExecutorAddress = "0x...";
+
+  // Transfer parameters
+  const amount = 1000000000000000n; // Amount to transfer
+  const recipientChain = 1; // Target chain ID
+  const recipientAddress = "0x..."; // 32-byte recipient address
+
+  // Get quote from executor service (implement based on your executor API)
+  const { signedQuote, estimatedCost } = await getExecutorQuote();
+
+  // Step 1: Approve tokens
+  await walletClient.writeContract({
+    address: tokenAddress,
+    abi: erc20Abi,
+    functionName: "approve",
+    args: [nttManagerWithExecutorAddress, amount],
+  });
+
+  // Step 2: Transfer with executor
+  const transferTx = await walletClient.writeContract({
+    address: nttManagerWithExecutorAddress,
+    abi: nttExecutorAbi.abi,
+    functionName: "transfer",
+    args: [
+      nttManagerAddress,
+      amount,
+      recipientChain,
+      recipientAddress,
+      recipientAddress, // refund address
+      "0x01000101", // encodedInstructions
+      {
+        value: estimatedCost,
+        refundAddress: account.address,
+        signedQuote: signedQuote,
+        instructions: "0x...", // relay instructions from executor
+      },
+      {
+        dbps: 0, // referrer fee
+        payee: account.address,
+      },
+    ],
+    value: estimatedCost,
+  });
+
+  console.log("Transfer complete:", transferTx);
+}
+
+transferWithExecutor().catch(console.error);
+```
+
+**Notes**:
+
+- For Solana transfers, convert recipient addresses from base58 to 32-byte hex format
+
 ⚠ **This software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 implied. See the License for the specific language governing permissions and limitations under the License.** Or plainly
 spoken - this is a very complex piece of software which targets a bleeding-edge, experimental smart contract runtime.