README.md in wicked_pdf-1.0.1 vs README.md in wicked_pdf-1.0.2

@@ -33,10 +33,12 @@
 gem 'wkhtmltopdf-binary'
 ```
 
 To your Gemfile and run `bundle install`.
 
+This wrapper may trail in versions, at the moment it wraps the 0.9 version of `wkhtmltopdf` while there is 0.12 version available. Some of the advanced options listed below is not available with 0.9.
+
 If your wkhtmltopdf executable is not on your webserver's path, you can configure it in an initializer:
 
 ```ruby
 WickedPdf.config = {
   exe_path: '/usr/local/bin/wkhtmltopdf'
@@ -143,9 +145,10 @@
                disable_internal_links:         true,
                disable_external_links:         true,
                print_media_type:               true,
                disable_smart_shrinking:        true,
                use_xserver:                    true,
+               background:                     false,                     # backround needs to be true to enable background colors to render
                no_background:                  true,
                viewport_size:                  'TEXT',                    # available only with use_xserver or patched QT
                extra:                          '',                        # directly inserted into the command to wkhtmltopdf
                outline: {   outline:           true,
                             outline_depth:     LEVEL },