README.md in imgkit-1.3.4 vs README.md in imgkit-1.3.5

@@ -64,10 +64,24 @@
         :quality => 60
       }
       config.default_format = :png
     end
 
+## Heroku
+
+get a version of `wkhtmltoimage` as an amd64 binary and commit it  
+to your git repo.  I like to put mine in "./bin/wkhtmltoimage-amd64"
+
+assuming its in that location you can just do: 
+
+    IMGKit.configure do |config|
+      config.wkhtmltoimage = Rails.root.join('bin', 'wkhtmltoimage-amd64').to_s if ENV['RACK_ENV'] == 'production'
+    end
+
+If you're not using Rails just replace Rails.root with the root dir of your app.
+
+
 ## Rails 
 
 ### Mime Types
 register a .jpg mime type in: 
 
@@ -80,10 +94,10 @@
     Mime::Type.register       "image/png", :png
 
 ### Controller Actions
 You can respond in a controller with:
 
-    @kit = IMGKit.new(render_as_string)
+    @kit = IMGKit.new(render_to_string)
 
     format.jpg do
       send_data(@kit.to_jpg, :type => "image/jpeg", :disposition => 'inline')
     end