README.md in doc_juan-1.1.0 vs README.md in doc_juan-1.2.0

@@ -15,11 +15,16 @@
       config.secret = 'my-special-secret'
     end
 
 If you are using Rails an initializer would be the appropriate place for this.
 
+### Authentication
 
+If your site is behind HTTP Basic Authentication `DocJuan.config.username` and `DocJuan.config.password` is your friends.
+
+**BEWARE!** Setting these will append your credentials to every DocJuan url generated and, depending on how you use them, can be _fully visible to your users_. The authentication credentials is foremost available for testing in your staging environment.
+
 ### Generating urls
 
 The `DocJuan.url` method generates a url to your Doc-Juan instance. It takes an url and a filename as the required arguments. You can supply an (optional) hash of options as the third argument.
 
 Valid options are:
@@ -28,10 +33,11 @@
 * `print_stylesheet` - If set to `true` the print stylesheet of the resource will be used.
 * `width` - Page width in millimeters.
 * `height` - Page height in millimeters.
 * `size` - a4, letter etc. This will be ignored if width and height is set. [List of sizes](http://stackoverflow.com/questions/6394905/wkhtmltopdf-what-paper-sizes-are-valid).
 * `orientation` - `landscape` or `portrait`. Defaults to portrait.
-* `lowquality` - Renders the pdf in low quality if set to `true`
+* `lowquality` - Renders the pdf in low quality if set to `true`.
+* `format` - Output file format, `pdf` or `jpg`. Defaults to `pdf`.
 
 #### Example
 
     url = DocJuan.url 'http://example.com', 'example.pdf'