def create
      upload_meta = prepare_to_upload
      response = upload_to_aws_s3(upload_meta)
      notify_ribose_file_upload_endpoint(response, upload_meta.fields.key)
    end
def create
      upload_meta = prepare_to_upload
      response = upload_to_aws_s3(upload_meta)
      notify_ribose_file_upload_endpoint(response, upload_meta.fields.key)
    end
Initialize the file uploader

 @param space_id [String] The Space UUID
 @param file [File] The complete path for file
 @param attributes [Hash] Attributes as a Hash
 Create a file upload

 @return [Sawyer::Resource] File upload response.