README.rdoc in ads-rails-0.0.3 vs README.rdoc in ads-rails-0.0.4

@@ -1,8 +1,8 @@
 {<img src="https://codeclimate.com/github/mattways/ads-rails.png" />}[https://codeclimate.com/github/mattways/ads-rails] {<img src="https://travis-ci.org/mattways/ads-rails.png?branch=master" alt="Build Status" />}[https://travis-ci.org/mattways/ads-rails] {<img src="https://gemnasium.com/mattways/ads-rails.png" alt="Dependency Status" />}[https://gemnasium.com/mattways/ads-rails]
 
-= Fonts Rails
+= Ads Rails
 
 Adds a simple helper to create the google adsense include tag.
 
 = Install
 
@@ -12,9 +12,14 @@
 Then bundle:
   $ bundle
 
 = Usage
   
-In your layout add a line like this in your head:
-  = google_adsense_include_tag :client => 'client', :slot => 'slot', :width => 'width', :height => 'height'
+In your view add a line like this wherever you like:
+  <%= google_adsense_include_tag client: 'client', slot: 'slot', width: 'width', height: 'height' %>
 
-(Will only show the include tag in production env)
+(Will only show the include tag in production and test env)
+
+= Configuration
+
+If you want to renderer different the placeholder, put something like this in your application.rb:
+  config.ads.renderer = proc { |options| tag(:img, src: "http://placehold.it/#{options[:width]}x#{options[:height]}&text=Google+AdSense") }