def field(name, *params)
      @model.translated_attribute_names.push name.to_sym
      @model.translated_attr_accessor(name)
      @model.translation_class.field name, *params
    end
def field(name, *params)
      @model.translated_attribute_names.push name.to_sym
      @model.translated_attr_accessor(name)
      @model.translation_class.field name, *params
    end
Initializes new istance of FieldsBuilder.
 Param Class
 Creates new field in translation document.
 Param String or Symbol
 Other params are the same as for Mongoid's +field+