ensure good rack version for @scottdavis and tweak a loading thing

attentive.gemspec

@@ -31,5 +31,6 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency 'thor'
   gem.add_dependency 'backbone-rails'
+  gem.add_dependency 'rack', '~> 1.4.0'
 end
 

lib/assets/javascripts/attentive.js.coffee

@@ -79,7 +79,12 @@ class Slide
 
 class this.Attentive
   @setup: (identifier) ->
-    starter = -> (new Attentive(identifier)).start()
+    starter = ->
+      setTimeout(
+        ->
+          (new Attentive(identifier)).start()
+        , 250
+      )
     window.addEventListener('DOMContentLoaded', starter, false)
 
   constructor: (@identifier) ->