Add info about optional ads in README
MODIFY
README.en.md
README.en.md
@@ -34,7 +34,7 @@ Unofficial android VULCAN UONET+ register client for both students and their par
* support for multiple accounts with the ability to rename students
* dark and black (AMOLED) theme
* offline mode
-* no ads
+* optional ads which allow to support the project
## Download

Add info about optional ads in README (#2054)