Readme updated

README.md

@@ -81,10 +81,13 @@ Older versions and its requirements https://packagist.org/packages/vitexsoftware
 
 For Debian, Ubuntu & friends please use repo:
 
-    wget -O - http://v.s.cz/info@vitexsoftware.cz.gpg.key|sudo apt-key add -
-    echo deb http://v.s.cz/ stable main > /etc/apt/sources.list.d/ease.list
-    aptitude update
-    aptitude install php-ease-bootstrap4-widgets
+```shell
+sudo apt install lsb-release wget
+echo "deb http://repo.vitexsoftware.cz $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/vitexsoftware.list
+sudo wget -O /etc/apt/trusted.gpg.d/vitexsoftware.gpg http://repo.vitexsoftware.cz/keyring.gpg
+sudo apt update
+sudo apt install php-vitexsoftware-ease-bootstrap4-widgets
+```
 
 In this case please add this to your app composer.json: