naive application of the append and prepend wrapper method

Author: Walter Davis

lib/bootstrap_form/inputs/file_field.rb

@@ -10,7 +10,7 @@ module FileField
         def file_field_with_bootstrap(name, options={})
           options = options.reverse_merge(control_class: "form-control")
           form_group_builder(name, options) do
-            input_with_error(name) do
+            prepend_and_append_input(name, options) do
               file_field_without_bootstrap(name, options)
             end
           end