Add `app/assets/images` directory to plugin new generator

railties/lib/rails/generators/rails/plugin_new/plugin_new_generator.rb

@@ -135,6 +135,12 @@ def javascripts
       end
     end
 
+    def images
+      if mountable? || full?
+        empty_directory_with_gitkeep "app/assets/images"
+      end
+    end
+
     def script(force = false)
       directory "script", :force => force do |content|
         "#{shebang}\n" + content
@@ -199,6 +205,10 @@ def create_javascript_files
         build(:javascripts)
       end
 
+      def create_images_directory
+        build(:images)
+      end
+
       def create_script_files
         build(:script)
       end

railties/test/generators/plugin_new_generator_test.rb

@@ -147,6 +147,7 @@ def test_creating_engine_in_full_mode
     run_generator [destination_root, "--full"]
     assert_file "app/assets/javascripts"
     assert_file "app/assets/stylesheets"
+    assert_file "app/assets/images"
     assert_file "app/models"
     assert_file "app/controllers"
     assert_file "app/views"
@@ -162,6 +163,9 @@ def test_being_quiet_while_creating_dummy_application
 
   def test_create_mountable_application_with_mountable_option
     run_generator [destination_root, "--mountable"]
+    assert_file "app/assets/javascripts"
+    assert_file "app/assets/stylesheets"
+    assert_file "app/assets/images"
     assert_file "config/routes.rb", /Bukkits::Engine.routes.draw do/
     assert_file "lib/bukkits/engine.rb", /isolate_namespace Bukkits/
     assert_file "test/dummy/config/routes.rb", /mount Bukkits::Engine => "\/bukkits"/