I18n Rails I18n

Need to improve AR translations documentation.

Here's a snipped from Iain:

activerecord:
  models:
    topic: Custom Topic Name
  attributes:
    topic:
      title: Custom Title
  errors:
    models:
      topic:
        blank: "Custom Invalid Message for {{model}}: {{attribute}}"
        attributes:
          title:
            blank: "Even more custom invalid message for {{model}}: {{attribute}}"


Topic.human_name # => "Custom Topic Name"
Topic.human_attribute_name("title") # => "Custom Title"
t = Topic.new
t.valid?
t.errors
# =>
#    :content => "Custom Invalid Message for Custom Topic Name: Content",
#    :title => "Even more custom invalid message for Custom Topic Name: Custom Title"