Fix readme

README.md

@@ -46,18 +46,19 @@ If you don't like NPM, a standalone [eth-signer.js](https://github.com/paulmillr
 
 ```ts
 import { addr, Transaction } from 'micro-eth-signer';
-import { amounts } from 'micro-eth-signer/utils';
+import { gweiDecimal, ethDecimal } from 'micro-eth-signer/utils';
 const privateKey = '0x6b911fd37cdf5c81d4c0adb1ab7fa822ed253ab0ad9aa18d77257c88b29b718e';
 const senderAddr = addr.fromPrivateKey(privateKey);
 const unsignedTx = Transaction.prepare({
   to: '0xdf90dea0e0bf5ca6d2a7f0cb86874ba6714f463e',
-  maxFeePerGas: 100n * amounts.GWEI, // 100 gwei in wei
-  value: 1n * amounts.ETHER, // 1 eth in wei
+  maxFeePerGas: gweiDecimal.decode('100'), // 100 gwei in wei
+  value: ethDecimal.decode('1.1'), // 1.1 eth in wei
   nonce: 0n,
 });
 const tx = unsignedTx.signBy(privateKey); // Uint8Array is also accepted
 console.log('signed tx', tx, tx.toHex());
 console.log('need total wei', tx.calcAmounts().wei.amountWithFee);
+console.log('need total eth', tx.calcAmounts().humanized.amountWithFee);
 console.log('address is same', tx.sender === senderAddr);
 ```