README.md in cnab-0.1.0 vs README.md in cnab-0.2.0

@@ -1,10 +1,11 @@
 # Cnab
 
 [![Gem Version](https://badge.fury.io/rb/cnab.png)](http://badge.fury.io/rb/cnab) [![Build Status](https://travis-ci.org/zertico/cnab.png)](https://travis-ci.org/zertico/cnab) [![Coverage Status](https://coveralls.io/repos/zertico/cnab/badge.png?branch=master)](https://coveralls.io/r/zertico/cnab) [![Code Climate](https://codeclimate.com/github/zertico/cnab.png)](https://codeclimate.com/github/zertico/cnab)
 
-Gem used to parse return from Brazil banks in format of cnab files.
+Gem used to parse return from Brazil banks in format of cnab files. It is based on the version 08.7 of the cnab.
+Right now it has support only for Segmento T and Segmento U.
 
 ## Installation
 
 Add this line to your application's Gemfile:
 
@@ -18,13 +19,28 @@
 
     $ gem install cnab
 
 ## Usage
 
-TODO: Write usage instructions here
+```ruby
+cnab = Cnab.parse('path/to/your/file')
+```
 
+This method will return the file parsed in objects.
+
+If you need to merge the segments T and U, just pass true as the optional parameter:
+
+```ruby
+cnab = Cnab.parse('path/to/your/file', true)
+```
+
+## TODO
+
+* Add support for another type of segments
+
 ## Mantainers
 [@plribeiro3000](https://github.com/plribeiro3000)
+
 [@mfbmina](https://github.com/mfbmina)
 
 ## Contributing
 
 1. Fork it