diff --git a/ReadMe接手必读.txt b/ReadMe接手必读.txt
new file mode 100644
index 00000000..d7c1aa00
--- /dev/null
+++ b/ReadMe接手必读.txt
@@ -0,0 +1,11 @@
+app\models\setting.rb :165
+  # fixed domain url in development. tantantan's bug
+  if Rails.env.development?
+    methods.map do |m|
+      define_singleton_method m do; nil; end if m.to_s =~ /([a-zA-Z]+_domain)$/
+    end
+  end
+  ³ÌÐò²¿·ÖÁ´½ÓÖÐÖƶ¨ÁËsubdomain²ÎÊý£¬Ê¹Á´½ÓÔÚ¶þ¼¶ÓòÃûÖÐÀ´»ØÌøת¡£
+  ΪÁË¿ª·¢·½±ã£¬Ê¹Ö®¹¦ÄÜÔÚdevelopmentģʽÏÂʧЧ¡£ 
+  # => nyan
+================================================================================
diff --git a/app/controllers/memos_controller.rb b/app/controllers/memos_controller.rb
index 49e6c176..a21086da 100644
--- a/app/controllers/memos_controller.rb
+++ b/app/controllers/memos_controller.rb
@@ -87,6 +87,7 @@ class MemosController < ApplicationController
     respond_to do |format|
       format.html # show.html.erb
       format.json { render json: @memo }
+      format.xml { render xml: @memo }
     end
   end