message: fix(fileuploader): added copyright
diff: +//
  +// Copyright IBM Corp. 2016, 2018
  +//
  +// This source code is licensed under the Apache-2.0 license found in the
  +// LICENSE file in the root directory of this source tree.
  +//
  +
  +@import '@carbon/layout/scss/convert';
  +//-----------------------------
  +// File Uploader (expressive)
  +//-----------------------------
  /// File uploader styles (expressive)
  /// @access private
  /// @group file-uploader-expressive
  