Update README.txt with new backends (#7496)

README.txt

@@ -2,18 +2,21 @@ Python module to interface with French's bank online credit card processing
 services.
 
 Services supported are:
-	ATOS/SIP used by:
-	BNP under the name Mercanet,
-	Banque Populaire (before 2010/2011) under the name Cyberplus,
-	CCF under the name Elysnet,
-	HSBC under the name Elysnet,
-	Crédit Agricole under the name e-Transactions,
-	La Banque Postale under the name ScelliusNet,
-	LCL under the name Sherlocks,
-	Société Générale under the name Sogenactif
-	and Crédit du Nord under the name Webaffaires,
-	SystemPay by Banque Populaire (since 2010/2011)
-	and SPPlus by Caisse d'épargne.
+- ATOS/SIP used by:
+  - BNP under the name Mercanet,
+  - Banque Populaire (before 2010/2011) under the name Cyberplus,
+  - CCF under the name Elysnet,
+  - HSBC under the name Elysnet,
+  - Crédit Agricole under the name e-Transactions,
+  - La Banque Postale under the name ScelliusNet,
+  - LCL under the name Sherlocks,
+  - Société Générale under the name Sogenactif
+  - and Crédit du Nord under the name Webaffaires,
+- SystemPay by Banque Populaire (since 2010/2011) and Caisse d'Épargne
+- TIPI
+- Ogone
+- Paybox
+- SPPlus by Caisse d'épargne (obsolete)
 
 You can emit payment request under a simple API which takes as input a
 dictionnary as configuration and an amount to pay. You get back a
@@ -27,5 +30,5 @@ implementation distributed by the Bank, but for ATOS/SIPS the kit distributed
 by the bank is also needed as the protocol created by ATOS is proprietary and
 not documented.
 
-The spplus module also depend upon the python Crypto library for DES decoding
-of the merchant key.
+The spplus and paybox module also depend upon the python Crypto library for DES
+decoding of the merchant key and RSA signature validation on the responses.