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

@@ -5,10 +5,11 @@
 
 ## Table of contents
 - [Columnify](#columnify)
   - [Table of contents](#table-of-contents)
   - [Installing Columnify](#installing-columnify)
+  - [Usage](#usage)
   - [Contributing](#contributing)
   - [License](#license)
   - [Code of Conduct](#code-of-conduct)
 
 ## Installing Columnify
@@ -36,9 +37,20 @@
 ```console
 $ rails g columnify:install
 ```
 
 This will just register the `xls` mime type inside the `config/initializers/mime_types.rb` file.
+
+## Usage
+
+The gem will add a renderer and a template handler for you to easily handle the creation of the Excel file:
+
+```ruby
+# app/views/posts/index.xls.columnify
+spreadsheet.worksheet @posts, :id, :title, :content
+```
+
+So the usage for the views is just to call the `workbook` method, send the array or active record collection, followed by the set of attributes or methods you want to appear on the `xls` file.
 
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/kurenn/columnify. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.