Fix the initializer syntax in the Rails 3 Railtie

SUPPORTED_RAILS_VERSIONS

@@ -6,4 +6,4 @@
 2.3.2
 2.3.4
 2.3.5
-3.0.0.beta
+3.0.0.beta3

features/rails.feature

@@ -22,7 +22,7 @@ Feature: Install the Gem in a Rails application
     When I uninstall the "hoptoad_notifier" gem
     And I install cached gems
     And I run "rake hoptoad:test"
-    Then the command should have run successfully
+    Then I should see "** [Hoptoad] Success: Net::HTTPOK"
     And I should receive two Hoptoad notifications
 
   Scenario: Configure the notifier by hand

features/step_definitions/rails_application_steps.rb

@@ -4,22 +4,14 @@
   @terminal.cd(TEMP_DIR)
   version_string = ENV['RAILS_VERSION']
 
-  rails3 = version_string =~ /^3/
-
-  if rails3
-    rails_binary_gem = 'railties'
-  else
-    rails_binary_gem = 'rails'
-  end
-
   load_rails = <<-RUBY
-    gem '#{rails_binary_gem}', '#{version_string}'; \
-    load Gem.bin_path('#{rails_binary_gem}', 'rails', '#{version_string}')
+    gem 'rails', '#{version_string}'; \
+    load Gem.bin_path('rails', 'rails', '#{version_string}')
   RUBY
 
   @terminal.run(%{ruby -rubygems -e "#{load_rails.strip!}" rails_root})
   if rails_root_exists?
-    @terminal.echo("Generated a Rails #{rails_version} application")
+    @terminal.echo("Generated a Rails #{version_string} application")
   else
     raise "Unable to generate a Rails application:\n#{@terminal.output}"
   end

features/support/rails.rb

@@ -14,7 +14,7 @@ def rails_uses_rack?
   def rails_version
     @rails_version ||= begin
       if bundler_manages_gems?
-        rails_version = open(gemfile_path).read.match(/gem.*rails".*"(.+)"/)[1]
+        rails_version = open(gemfile_path).read.match(/gem.*rails["'].*["'](.+)["']/)[1]
       else
         environment_file = File.join(RAILS_ROOT, 'config', 'environment.rb')
         rails_version = `grep RAILS_GEM_VERSION #{environment_file}`.match(/[\d.]+/)[0]

lib/hoptoad_notifier/railtie.rb

@@ -7,7 +7,9 @@ class Railtie < Rails::Railtie
       require "hoptoad_notifier/rails3_tasks"
     end
 
-    config.app_middleware.insert_after "::ActionDispatch::ShowExceptions", "HoptoadNotifier::Rack"
+    initializer "hoptoad.use_rack_middleware" do |app|
+      app.config.middleware.insert_after "::ActionDispatch::ShowExceptions", "HoptoadNotifier::Rack"
+    end
 
     config.after_initialize do
       HoptoadNotifier.configure(true) do |config|