rails.rb in sentry-rails-4.2.0

- old
+ new

@@ -1,7 +1,8 @@
 require "sentry-ruby"
 require "sentry/integrable"
 require "sentry/rails/configuration"
+require "sentry/rails/engine"
 require "sentry/rails/railtie"
 require "sentry/rails/tracing"
 
 module Sentry
   module Rails