Update README.md

README.md

@@ -8,11 +8,16 @@ Raddocs is a browser for JSON outputted by the [rspec_api_documentation](http://
 ## Install
 
 `Gemfile`
-
-	gem 'raddocs'
+```ruby
+gem 'raddocs'
+```
 
 `config/routes.rb`
 
-	...
-	match "/docs" => Raddocs::App, :anchor => false
-	...
+```ruby
+  match "/docs" => Raddocs::App, :anchor => false
+```
+
+## Configuration
+* docs_dir       - where the JSON output from rspec_api_documentation is located
+* docs_mime_type - if you use the middleware, what mime type are you serving your docs as, must be a regex. eg: `/text\/vnd.org.oestrich.raddocs\+plain/`