Update README.md

Author: blackandred

README.md

@@ -8,10 +8,16 @@ Default variables
 -----------------
 
 ```yamlex
+# turns off Debian/Ubuntu automatic updates, as those updates often breaks applications in docker containers after docker upgrade
 remove_unattended_upgrades: yes
+
+# removes spies from hosting companies
 remove_qemu_guest_agent: yes
+
+# sets "journald" as logging driver for better performance and logs rotation managed by systemd
 tune_docker: yes
-adjust_swappiness: yes
 
+# sets swapiness (for servers recommended is 10)
+adjust_swappiness: yes
 swappiness: 10
 ```