README.rdoc in sendgrid-rails-2.0.4 vs README.rdoc in sendgrid-rails-2.0.5

@@ -26,9 +26,27 @@
       :authentication => :plain,
       :user_name => '[e-mail]',
       :password => 'your password'
     }
 
+If you use Heroku, here what the mailer initializer may look like:
+
+    ActionMailer::Base.register_interceptor(SendGrid::MailInterceptor)
+    
+    if ENV['SENDGRID_USERNAME'] && ENV['SENDGRID_PASSWORD']
+      ActionMailer::Base.smtp_settings = {
+        :address        => 'smtp.sendgrid.net',
+        :port           => '465',
+        :authentication => :plain,
+        :user_name      => ENV['SENDGRID_USERNAME'],
+        :password       => ENV['SENDGRID_PASSWORD'],
+        :domain         => 'heroku.com',
+        :enable_starttls_auto => true,
+        :ssl => true
+      }
+      ActionMailer::Base.delivery_method = :smtp
+    end
+
 === Overriding default recipient in standard SMTP header
 
 Dummy recipient email used in sent email's "To" header and seen in received email's Received header.
 By default set to '[e-mail]'