Instead of using the Active Record Base's class name, the table name is
now inferred based on its model name object. This allows customization
of the table name pattern since a distinct instance of
`ActiveModel::Name` can be used instead.

For example, to map a `PostRecord` class to a `posts` table:

```ruby

 class PostRecord < ActiveRecord::Base
   class << self
     def model_name
       ActiveModel::Name.new(self, nil, 'Post')
     end
   end
 end

 PostRecord.table_name
 # => "posts"
```