[IMP] eCommerce: brand new doc on payment methods + requested config changes for Paypal

ecommerce/shopper_experience/wire_transfer.rst

@@ -0,0 +1,42 @@
+=======================================
+How to get paid with wire transfers
+=======================================
+
+**Wire Transfer** is the default payment method available. 
+The aim is providing your customers with your bank details 
+so they can pay on their own.
+This is very easy to start with but slow and inefficient process-wise. 
+Opt for payment acquirers as soon as you can!
+
+
+How to provide customers with payment instructions
+==================================================
+Put your payment instructions in the **Thanks Message** of your payment method.
+
+.. image:: media/payment_instructions.png
+  :align: center
+
+They will appear to the customers when they place an order.
+
+.. image:: media/payment_customer_instructions.png
+  :align: center
+
+
+How to manage an order once you get paid
+========================================
+
+Whenever a customer pays by wire transfer, the order stays in an 
+intermediary stage **Quotation Sent** (i.e. unpaid order). 
+When you get paid,
+you confirm the order manually to launch the delivery.
+
+
+How to create other manual payment methods
+==========================================
+
+If you manage a B2B business, you can create other manually-processed 
+payment methods like paying by check.
+To do so, just rename *Wire Transfer* or duplicate it.
+
+.. image:: media/payment_check.png
+  :align: center