update README.md

README.md

 ## SFTP Reader & Validator
 
+Checks the files present in the `app.directory` folder on the sFTP server.
+
 [Confluence Doku](https://memobase.atlassian.net/wiki/spaces/TBAS/pages/29196525/Service%2BsFTP%2BReader%2BValidator)
 
+### Current Features
+
+- Check if files are CSV or TSV
+- Check if CSV and TSV files are formatted correctly.
+
 ### Requirements 
 
 - Access to a Kafka Server