add transfer hbar example

examples/transfer_hbar/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"fmt"
+	"github.com/hashgraph/hedera-sdk-go"
+	"os"
+)
+
+func main() {
+	operatorAccountID, err := hedera.AccountIDFromString(os.Getenv("OPERATOR_ID"))
+	if err != nil {
+		panic(err)
+	}
+
+	operatorPrivateKey, err := hedera.Ed25519PrivateKeyFromString(os.Getenv("OPERATOR_KEY"))
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("Crypto Transfer Example")
+
+	client := hedera.ClientForTestnet().
+		SetOperator(operatorAccountID, operatorPrivateKey)
+
+	fmt.Printf("Transferring 1 hbar from %v to 0.0.3\n", operatorAccountID)
+
+	transactionID, err := hedera.NewCryptoTransferTransaction().
+		AddSender(operatorAccountID, hedera.NewHbar(1)).
+		AddRecipient(hedera.AccountID{Account: 3}, hedera.NewHbar(1)).
+		SetTransactionMemo("go sdk example send_hbar/main.go").
+		Execute(client)
+
+	if err != nil {
+		panic(err)
+	}
+
+	receipt, err := transactionID.GetReceipt(client)
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("crypto transfer status: %v\n", receipt.Status)
+}