Update readme

Author: mitechie

README

@@ -36,5 +36,9 @@ Command-line usage::
 
 
 Document() kwarg options:
-    url=xxx will run make_links_absolute()
 
+ - attributes:
+ - debug: output debug messages
+ - min_text_length:
+ - retry_length:
+ - url: will allow adjusting links to be absolute