add credit note payment process for online order

config/routes.rb

@@ -202,6 +202,7 @@ scope "(:locale)", locale: /en|mm/ do
     post 'payment/junctionpay' => 'junction_pay#create'
     post 'payment/dinga' => 'dinga#create'
     post 'payment/gift_voucher' => 'gift_voucher#create'
+    post 'payment/credit_payment' => 'credit_payments#create_credit_payment'
 
     post 'payment/:type/change_tax' => 'payments#change_tax', :defaults => {:format => 'json'}