README.md in opay-1.0.0.beta vs README.md in opay-1.0.0

@@ -1,3 +1,32 @@
+[![Build Status](https://travis-ci.org/olownia/opay.png)](https://travis-ci.org/olownia/opay)
+
 # Opay
 
-[![Build Status](https://travis-ci.org/olownia/opay.png)](https://travis-ci.org/olownia/opay)
+Opay is a payu.pl payment provider for Rails apps.
+
+## Installation
+
+Add this to your Gemfile:
+
+``` ruby
+gem 'opay'
+```
+
+and run `bundle install`.
+
+Next, run:
+
+``` bash
+# add an initializer to config/initializers with all of the configuration options
+$ rails g opay:install
+# This will add the necessary migrations to your app's db/migrate directory
+rake opay:install:migrations
+# This will run any pending migrations
+rake db:migrate
+``` 
+then add the following to your routes.rb file:
+
+``` ruby
+# config/routes.rb
+mount Opay::Engine => '/opay'
+```
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