Add more information in transactions docstrings

handler/transactions.py

@@ -27,6 +27,10 @@ class Transactions(object):
     """
 
     def __init__(self):
+        """
+        Initialise the Transaction object.
+        Set the logger.
+        """
         self.log = Logger("transactions")
 
     def set_agora(self, agora):
@@ -84,6 +88,7 @@ class Transactions(object):
         :type reference: string
         :type amount: int
         :return: transaction details or AMOUNT_INVALID, or False
+        :rtype: dict or string or bool
         """
         all_transactions = r.scan(0, match="tx.*")
         for tx_iter in all_transactions[1]: