diff --git a/README.md b/README.md
new file mode 100644
index 0000000..87a5459
--- /dev/null
+++ b/README.md
@@ -0,0 +1,21 @@
+## Installation
+```
+npm install
+```
+
+Update config file:
+```
+cp ./config/default.json ./config/local.json
+// edit local.json file
+```
+
+## Run
+
+Make a lot TXs to send TOMO:
+```
+node cmd.js sendTomo -n 10 your_private_key
+```
+
+- `-n`: number of TXs
+- `your_private_key`: the wallet, make sure you have some TOMO in the wallet to make TXs
+            
diff --git a/commands/sendTomo.js b/commands/sendTomo.js
index 3fb93ac..2b8208e 100644
--- a/commands/sendTomo.js
+++ b/commands/sendTomo.js
@@ -6,7 +6,7 @@ let sleep = (time) => new Promise((resolve) => setTimeout(resolve, time))
 var nonce = 0
 
 async function run (pkey, number) {
-    const account = web3Rpc.eth.accounts.privateKeyToAccount(pkey)
+    const account = web3Rpc.eth.accounts.privateKeyToAccount('0x' + pkey)
     let coinbase = account.address
     web3Rpc.eth.accounts.wallet.add(account)
     web3Rpc.eth.defaultAccount = coinbase