README.md in opay-1.2.0 vs README.md in opay-1.2.1

@@ -1,11 +1,15 @@
 [![Build Status](https://travis-ci.org/olownia/opay.png)](https://travis-ci.org/olownia/opay)
 
 # Opay
 
-Opay is a payu.pl payment provider for Rails apps.
+Opay is a payment solution for Rails apps.
 
+Currently supported engines:
+* payu
+* paypal express payment
+
 ## Installation
 
 Add this to your Gemfile:
 
 ``` ruby
@@ -26,25 +30,42 @@
 ```
 then add the following to your routes.rb file:
 
 ``` ruby
 # config/routes.rb
+get 'success' => 'controller#success', as: :success_payment
+get 'cancel' => 'controller#cancel', as: :cancel_payment
+
 mount Opay::Engine => '/opay'
 ```
 
 declare which of your models recive payments
 
 ``` ruby
 class ModelName < ActiveRecord::Base
   include Opay::Payable
+
+  after_payment do
+    # optional after payment callback
+  end
+
+  def amount
+    100
+  def
 end
 ```
 
 create payment form
 
 ``` haml
-= opay_form_for(@model_name) do |f|
+= opay_form_for(@model_name, provider: :payu) do |f|
   = f.payment_info first_name: 'Jan', last_name: 'Kowalski', email: '[e-mail]', desc: 'Payment description'
+  = f.submit 'pay with payu'
+```
+
+``` haml
+= opay_form_for(@model_name, provider: :paypal) do |f|
+  = f.payment_info desc: 'Test payment', client_ip: '127.0.0.1'
   = f.submit 'pay with payu'
 ```
 
 set up online url in payu.pl to: `/opay/payu/online`