README.md in rakismet-1.4.0 vs README.md in rakismet-1.5.0

@@ -154,9 +154,18 @@
 
 ```ruby
 config.rakismet.use_middleware = false
 ```
 
+Additionally, the middleware will send along additional env variables starting with 
+HTTP_ to Akismet. If you wish to block any sensitive user information, use:
+
+```ruby
+config.rakismet.excluded_headers = ['HTTP_COOKIE','HTTP_SENSITIVE']
+```
+
+excluded_headers will default to ['HTTP_COOKIE']
+
 Testing
 -------
 
 Rakismet can be configued to tell Akismet that it should operate in test mode -
 so Akismet will not change its behavior based on any test API calls, meaning