Update version info in README.md

README.md

@@ -22,11 +22,12 @@ npm i fastify-nodemailer --save
 
 The plugin supports the following `Fastify` and `Nodemailer` versions. Please refer to corresponding branch in PR and issues.
 
-version | branch | fastify | nodemailer | support
---------|--------|---------|------------|--------  
+version | branch | fastify | nodemailer | End of support
+--------|--------|---------|------------|---------------  
 1.x | [1.x](https://github.com/lependu/fastify-nodemailer/tree/1.x) | 1.x | 4.x | 2019-06-01  
 2.x | [2.x](https://github.com/lependu/fastify-nodemailer/tree/2.x) | 2.x | 4.x | TBD  
-3.x | [master](https://github.com/lependu/fastify-nodemailer) | 2.x | 5.x | TBD  
+3.x | [master](https://github.com/lependu/fastify-nodemailer) | 2.x | 5.x | [Deprecated](https://github.com/nodemailer/nodemailer/issues/979)
+4.x | [master](https://github.com/lependu/fastify-nodemailer) | 2.x | 6.x | TBD
 
 ## Usage
 Add it to you project with `register` and you are done!