Updated Verify Withdrawal endpoint

Author: Emmanuelonyo

README.md

@@ -101,6 +101,16 @@ print(withdraw_result)
 
 ```
 
+#### Verify Withdrawal Reference
+
+```python
+tnxRef =  '123-456-789-789405'
+
+verify_result = manager.verify_withdrawal(withdraw_params)
+print(verify_result)
+
+```
+
 #### Redeem Asset
 
 ```python

cngn_manager/main.py

@@ -97,6 +97,9 @@ def get_transaction_history(self, page: int = 1, limit: int = 10 ) -> str:
     def withdraw(self, data: dict) -> str:
         return self.__make_calls("POST", "/withdraw", data)
 
+    def verify_withdrawal(self, tnxRef: str):
+        return self.__make_calls('GET', f"/withdraw/verify/{tnxRef}")
+
     def redeem_assets(self, data: dict) -> str:
         return self.__make_calls("POST", "/redeemAsset", data)