[TASK] Add note to readme for file reference import

README.md

@@ -326,3 +326,9 @@ This extension comes with the command controller task **** to migirate tx_news e
 - **languageMapAsJson** : a json string, mapping language ids (old => new). this is needed if the sys_language_uids have changed
 - **categoryMapAsJson** : a json string, mapping sys_category ids (old => new).
 - **pId** : only news from that pid will be migrated
+
+### Migrating File References
+
+To use your old file references, you need to import your sys_file and sys_file_reference_table as sys_file_news_migration and sys_file_reference
+into your database. The Filepaths must not change!
+