Add vaction message:

1. Open index.md (click on it)
2. Edit the file, click on the small pen
3. Add message like ## <span style="color:red">Die Praxis ist vom 15.02.2019 - 12.03.2019 wegen Urlaub geschlossen</span> at line 7. (copy from here, right-click->copy)
4. Scroll down, add summary where Update index.md is written
5. Click on commit
6. Check website

./testlocal.sh

bundle outdated
bundle update

Certain files include the domain name an need to be changed before production deploy:

• CNAME
• _config.yml