Update README.md

Note about dns
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Mikael Nordin 2020-11-29 15:09:34 +01:00 committed by GitHub
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@ -14,6 +14,13 @@ For packaging a debian package you can use these dependencies:
Thanks to Jan Bodnar of zetcode.com for the valuable tutorial on wxPython dialogs:
* http://zetcode.com/wxpython/dialogs/
## Prerequisites
Make sure you are using resolvconf and systemd-resolvd otherwise NetworkManager might empty /etc/resolv.conf when you remove the last tunnel:
```
sudo apt install resolvconf
sudo systemctl restart systemd-resolved.service
```
## Installation
You can install using pip:
```