README.md in invisible_captcha-0.1.3 vs README.md in invisible_captcha-0.2.0

@@ -3,20 +3,30 @@
 
 ## Installation
 Add this line to you Gemfile:
 
 ```
-gem 'invisible_captcha', :require => 'invisible_captcha'
+gem 'invisible_captcha'
 ```
 
+Or install gem:
+
+```
+gem install invisible_captcha
+```
+
 ## Usage
 In your form:
 
 ```ruby
 <%= form_for(@topic) do |f| %>
-  ...
-  <%= invisible_captcha 'topic', 'subtitle' %>
-  ...
+
+  <!-- use form helper -->
+  <%= f.invisible_captcha :subtitle %>
+
+  <!-- or use view helper -->
+  <%= invisible_captcha :topic, :subtitle %>
+
 <% end %>
 ```
 
 In your ActiveModel: