README: Add line about static files gotcha

README.md

@@ -56,6 +56,7 @@ mkdir -p remote-mediactl
 sudo sshfs -o allow_other,default_permissions -o IdentityFile=/home/YOURUSER/.ssh/id_ed25519 -p2222 YOURUSER@mediactl.mediahell.hfbk.net:/home/d0/mediactl remote-mediactl
 ```
 
+**⚠ Important:** If you edit any of the static files (css/images/js/etc) you need to run the `./deploy_static.sh` script afterwards, else those changes will not be used in production !
 
 ## Connection diagram