Automatic download and execution of browser from Google should be noted in README

I just installed vhs through my package manager. And when I run the application I was shocked, as it downloads an executable from the web without disclosing it would. I think it is very important to note this in the README it would connect to Google servers and download entire browser to operate correctly. After my research I understand why this is happening, as it is done through a library or application vhs depends on. I think this is important for the user to know before using the program. Please add this as a note to the README.

Start with the README and identify where installation or first-run behavior is described. Add a clear note that VHS connects to Google servers and downloads and executes a browser, then verify the README accurately discloses this behavior.

Written by the indexing model from the issue text.