README.md in rack-contrib-2.2.0 vs README.md in rack-contrib-2.3.0

@@ -6,10 +6,9 @@
 * `Rack::Access` - Limits access based on IP address
 * `Rack::Backstage` - Returns content of specified file if it exists, which makes it convenient for putting up maintenance pages.
 * `Rack::BounceFavicon` - Returns a 404 for requests to `/favicon.ico`
 * `Rack::CSSHTTPRequest` - Adds CSSHTTPRequest support by encoding responses as CSS for cross-site AJAX-style data loading
 * `Rack::Callbacks` - Implements DSL for pure before/after filter like Middlewares.
-* `Rack::Config` - Shared configuration for cooperative middleware.
 * `Rack::Cookies` - Adds simple cookie jar hash to env
 * `Rack::Deflect` - Helps protect against DoS attacks.
 * `Rack::Evil` - Lets the rack application return a response to the client from any place.
 * `Rack::HostMeta` - Configures `/host-meta` using a block
 * `Rack::JSONBodyParser` - Adds JSON request bodies to the Rack parameters hash.