README.rdoc in sendgrid-rails-1.0.0 vs README.rdoc in sendgrid-rails-1.1.0

@@ -5,19 +5,18 @@
 
     add_recipients(array_of_emails)
     substitute(patters_string, array_of_substitunion_strings)
     uniq_args(hash_of_unique_args)
     category(category_string)
+    open_tracking(enabled = true)
     add_filter_setting(filter_name, setting_name, value)
 
-== Examples
+== Rails 3 configuration
 
-=== Rails 3 configuration
-
 In your Gemfile:
 
-    gem 'sendgrid-rails', '>=1.0.0', :git => 'git://github.com/PavelTyk/sendgrid-rails.git'
+    gem 'sendgrid-rails', '>=1.0.0'
 
 In your config/environment.rb:
 
     ActionMailer::Base.smtp_settings = {
       :address => 'smtp.sendgrid.net',
@@ -26,19 +25,21 @@
       :authentication => :plain,
       :user_name => '[e-mail]',
       :password => 'your password'
     }
 
-==== Adding multiple recipients:
+== Usage examples
 
+=== Adding multiple recipients:
+
     class Mailer < ActionMailer::Base
       default :from => '[e-mail]',
               :subject => 'An email sent via SendGrid'
 
       def email_with_multiple_recipients
         add_recipients %w([e-mail] [e-mail])
-        mail :body => 'Hello.'
+        mail
       end
     end
 
 === Adding substitution vars
 
@@ -46,16 +47,31 @@
 
     class Mailer < ActionMailer::Base
       default :from => '[e-mail]',
               :subject => 'An email sent via SendGrid with substitutions'
 
-      def mail_with_substitutions
-        emails = %w([e-mail] [e-mail])
-        names = %w(User1 User2)
+      def email_with_substitutions
+        add_recipients %w([e-mail] [e-mail])
+        substitute '-user_name-', %w(User1 User2)
 
-        add_recipients emails
-        substitute '-user_name-', names
+        mail :body => "Hello, -user_name-!"
+      end
+    end
 
-        mail :body => "Hello, -user_name-."
+== Apps (formerly called Filters)
+
+Apps can be applied to any of your email messages and can be configured through SendGrid gem.
+
+=== Open Tracking
+
+Add an invisible image at the end of the email to track e-mail opens. If the email recipient has images enabled on the email client, a request to server for the invisible image is executed and an open is logged.
+
+    class Mailer < ActionMailer::Base
+      default :from => '[e-mail]',
+              :subject => 'An email sent via SendGrid'
+
+      def email_with_open_tracking_enabled
+        open_tracking true
+        mail :to => '[e-mail]'
       end
     end