Update README.md

Author: Shahriyar Rzayev

README.md

@@ -5,11 +5,16 @@ MySQL AutoXtrabackup commandline tool written in Python 3.
 For community from Azerbaijan MySQL User Community: [MySQL Azerbaijan Community](http://mysql.az/).
 For any question please ask: [Email](mailto:rzayev.shahriyar@yandex.com)
 
+Development:
+-------------------
+
+Current active development branch is release_v2.0 - so if you want to help, please do changes on this branch and then kindly send PR :)
+
 Read full documentation here:
 -----------------------------
 
 [**MySQL-AutoXtrabackup documentation!**](http://mysql-autoxtrabackup.readthedocs.io/en/latest/index.html)
 
 
 
-		
+