[ADD] addons table in README.md

README.md

@@ -7,6 +7,17 @@ Social addons for Odoo
 
 Addons concerning Odoo's social ERP features and messaging in general
 
-Translation state
------------------
+[//]: # (addons)
+Available addons
+----------------
+addon | version | summary
+--- | --- | ---
+[mail_attach_existing_attachment](mail_attach_existing_attachment/) | 8.0.1.0.0 | Adding attachment on the object by sending this one
+[mail_compose_select_lang](mail_compose_select_lang/) | 1.0 | Select language in mail compose window
+[mass_mailing_custom_unsubscribe](mass_mailing_custom_unsubscribe/) | 8.0.1.0.0 | Customizable unsubscribe link on mass mailing emails
+
+[//]: # (end addons)
+
+Translation Status
+------------------
 [![Transifex Status](https://www.transifex.com/projects/p/OCA-social-8-0/chart/image_png)](https://www.transifex.com/projects/p/OCA-social-8-0)