README.md in flag-icons-rails-2.5.0 vs README.md in flag-icons-rails-3.1.0

@@ -62,16 +62,16 @@
 flag_icon(:by)
 # => <span class="flag-icon flag-icon-by"></span>
 ```
 
 ```ruby
-flag_icon(:by, true)
+flag_icon(:by, squared: true)
 # => <span class="flag-icon flag-icon-by flag-icon-squared"></span>
 ```
 
 ```ruby
 flag_icon(:by, id: 'my-flag', class: 'strong')
-# => <span id="my-flag" class="flag-icon flag-icon-by flag-icon-squared strong"></span>
+# => <span id="my-flag" class="flag-icon flag-icon-by strong"></span>
 ```
 
 ### Thanks
 
 * **lipis** for amazing collection of all country flags [flags-icon-css](https://github.com/lipis/flag-icon-css)