some updates, maybe i need tests?

README.md

@@ -19,3 +19,4 @@ Run the presentation that's in the current directory on port 9393.
 
 Run the current presentation on another port.
 
+Edit `presentation.rb` and start adding `.slides` files in `presentation/`. The files are processed in sort order.

bin/attentive

@@ -26,7 +26,7 @@ class Attentive::CLI < Thor
   method_options [ :port, '-p' ] => 9393
   def start
     if Attentive.has_presentation?
-      Attentive::Server.start!
+      Attentive::Server.start(options)
     else
       raise Attentive::NoPresentationError
     end

lib/attentive/server.rb

@@ -14,7 +14,7 @@ require 'forwardable'
 
 module Attentive
   class Server < Rack::Builder
-    def start!
+    def self.start(options)
       require 'rack'
       require 'pygments'
       require 'coffee_script'