Recognize a Rails 3 app.

Closes #47, closes #48.

app/models/passenger_application.rb

@@ -214,9 +214,11 @@ def blank?(value)
     value.nil? || value.empty?
   end
 
+  RAILS_APP_REGEXP = /Rails::Initializer|Application\.initialize!/
+
   def check_application_type
     env_file = File.join(@path, 'config', 'environment.rb')
-    (File.exist?(env_file) and File.read(env_file) =~ /Rails::Initializer/) ? RAILS : RACK
+    (File.exist?(env_file) and File.read(env_file) =~ RAILS_APP_REGEXP) ? RAILS : RACK
   end
 
   def load_data_from_vhost_file(file = config_path)

test/passenger_application_test.rb

@@ -104,6 +104,12 @@ def after_setup
     @passenger_app.application_type.should == PassengerApplication::RAILS
   end
 
+  it "should recognize it as a Rails application if there's a config/environment.rb file, which contains `Application.initialize!'" do
+    File.stubs(:exist?).with('/Users/het-manfred/rails code/blog/config/environment.rb').returns(true)
+    File.stubs(:read).with('/Users/het-manfred/rails code/blog/config/environment.rb').returns("# Initialize the rails application\nRoomTemperature::Application.initialize!\n")
+    @passenger_app.application_type.should == PassengerApplication::RAILS
+  end
+
   it "should recognize it as a Rack application if there's a config/environment.rb file, but doesn't contain the string `Rails::Initializer'" do
     File.stubs(:exist?).with('/Users/het-manfred/rails code/blog/config/environment.rb').returns(true)
     File.stubs(:read).with('/Users/het-manfred/rails code/blog/config/environment.rb').returns("Foo bar")