[UPD] addons table in README.md

README.md

@@ -24,6 +24,7 @@ addon | version | maintainers | summary
 [base_external_dbsource](base_external_dbsource/) | 16.0.1.0.1 |  | External Database Sources
 [base_external_dbsource_mssql](base_external_dbsource_mssql/) | 16.0.1.0.1 | [![anddago78](https://github.com/anddago78.png?size=30px)](https://github.com/anddago78) | External Database Source - MSSQL
 [base_external_dbsource_sqlite](base_external_dbsource_sqlite/) | 16.0.1.0.1 | [![anddago78](https://github.com/anddago78.png?size=30px)](https://github.com/anddago78) | External Database Source - SQLite
+[base_external_system](base_external_system/) | 16.0.1.0.0 |  | Data models allowing for connection to external systems.
 [base_global_discount](base_global_discount/) | 16.0.1.0.0 |  | Base Global Discount
 [base_import_match](base_import_match/) | 16.0.1.0.0 |  | Try to avoid duplicates before importing
 [base_portal_type](base_portal_type/) | 16.0.1.0.0 | [![hbrunn](https://github.com/hbrunn.png?size=30px)](https://github.com/hbrunn) | Base module to allow different types of portals