Update README.md

README.md

@@ -31,6 +31,9 @@ or from the Web administration:
  * Update NGINX configuration to fix security issues
  * Rewrite the upgrade script and update backup/restore too
  * Test the upgrade from the current official package
+ * Develop an app to integrate SSOwat logout - see
+   [here](https://doc.owncloud.org/server/9.0/developer_manual/app/hooks.html#session)
+ * Check the external storage plugin
  * ...
 
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