Add CouchFoo.property_i18n method

app/models/layout.rb

@@ -1,7 +1,8 @@
 class Layout < CouchFoo::Base
   
    property :name, String
-   property :content, String
+   property :content, String #remove later
+   property_i18n :content, String
    
    validates_presence_of :name
    

app/models/page.rb

@@ -1,13 +1,9 @@
 class Page < CouchFoo::Base
   
-   property :lang, String
    property :name, String
    property :parent_page_id, String
    
-   property :content_zh_tw, String
-   property :content_en, String
-   property :content_ja, String
-   # TODO: more language can dynamic added
+   property_i18n :content, String
    
    property :layout_id, String
    property :layout_name, String

app/models/snippet.rb

@@ -1,8 +1,9 @@
 class Snippet < CouchFoo::Base
   
    property :name, String
-   property :content, String
-   
+   property :content, String # remove later
+   property_i18n :content, String
+    
    validates_presence_of :name
    
 end