Update Ruby On Rails documentation to 4.0.2

lib/docs/scrapers/rdoc/rails.rb

@@ -18,7 +18,7 @@ module Docs
 
     self.name = 'Ruby on Rails'
     self.slug = 'rails'
-    self.version = '4.0.1'
+    self.version = '4.0.2'
     self.dir = '/Users/Thibaut/DevDocs/Docs/RDoc/Rails'
 
     html_filters.replace 'rdoc/entries', 'rails/entries'