Update readme

Author: HPWebdeveloper

README.md

@@ -145,6 +145,10 @@ $user->getWalletBalanceByType('wallet_2') // Balance available in wallet_2
 LaravelPayPocket::walletBalanceByType($user, 'wallet_1');
 ```
 
+### Exceptions
+Upon examining the `src/Exceptions` directory within the source code, 
+you will discover a variety of exceptions tailored to address each scenario of invalid entry.
+
 ### Log
 ![Laravel Pay Pocket Log](https://github.com/HPWebdeveloper/laravel-pay-pocket/assets/16323354/a242d335-8bd2-4af1-aa38-4e95b8870941)