script enhancement

README.md

@@ -50,7 +50,14 @@ GAS_PRICE=0.7
 parity --jsonrpc-port 8549 --chain kovan --unlock 0x0039F22efB07A647557C7C5d17854CFD6D489eF3 --password $HOME/FILE_PATH_TO_YOUR_PASSWORD_FILE
 ```
 5. Copy list of addresses into [scripts/ARRAY_OF_ADDRESSES.json](scripts/ARRAY_OF_ADDRESSES.json)
-5. run `node whitelist.js`
+6. run `node whitelist.js`
+The script will show you how many total transactions will be generated
+Caution:
+If you see this error:
+```diff
+- Unhandled rejection Error: Transaction was not mined within 50 blocks, please make sure your transaction was properly send. Be aware that it might still be mined!
+```
+it's totally ok because the transaction is still in the queue and hasn't been mined yet.
 
 # Test result and gas usage
 ```

scripts/whitelist.js

@@ -15,6 +15,7 @@ filterAddresses(ARRAY_OF_ADDRESSES).then(async (toWhitelist) => {
     console.log(toWhitelist.length);
     const addPerTx = 160;
     const slices = Math.ceil(toWhitelist.length / addPerTx);
+    console.log(`THIS SCRIPT WILL GENERATE ${slices} transactions`);
     var txcount = await web3.eth.getTransactionCount(UNLOCKED_ADDRESS);
     const nonce = web3.utils.toHex(txcount);
     console.log('STARTED', nonce);