README.md in payu_api-0.1.0 vs README.md in payu_api-0.1.1

@@ -1,7 +1,10 @@
 # PayU REST API
 
+[![Gem Version](https://badge.fury.io/rb/payu_api.svg)](https://badge.fury.io/rb/payu_api)
+[![Build Status](https://travis-ci.org/busfor/payu_api.svg?branch=master)](https://travis-ci.org/busfor/payu_api)
+
 Ruby wrapper for PayU REST API.
 
 ## Installation
 
 Add this line to your application's Gemfile:
@@ -18,17 +21,28 @@
 
     $ gem install payu_api
 
 ## Usage
 
+Get OAuth token:
+
+```ruby
+response = PayuAPI.authorize(pos_id: '300046', key: '098f6b...', sandbox: true)
+
+response.success?
+# => true
+
+response.auth_token
+# => "c8d4b7..."
+
+response.expires_in
+# => 43199
+```
+
 Create client:
 
 ```ruby
-client = PayuAPI::Client.new(
-  pos_id: '300046',
-  auth_token: 'c8d4b7ac61758704f38ed5564d8c0ae0',
-  sandbox: true
-)
+client = PayuAPI::Client.new(pos_id: '300046', auth_token: 'c8d4b7...', sandbox: true)
 ```
 
 Creating a new order:
 
 ```ruby