Add instructions for missing installation requirements.

[rorybricks]

No description provided.

[gemini-code-assist]

Code Review

This pull request updates the README.md to include instructions for installing krunkit as a manual dependency alongside qemu. It adds the necessary brew tap and brew install commands for krunkit. I have no feedback to provide.

[henrywang]

Could you please sign-off commit? Thanks.

[germag]

@rorybricks I think something happened because there are 3 commits, please fix it, leaving only the last commit

[rorybricks]

Any instructions on how to remove a commit from a pull request.

[germag]

Any instructions on how to remove a commit from a pull request.

sure, do:

• git log --one-line to pick the first commit hash of your PR
• interactive rebase git rebase -i first-commit-hash^
• an editor will open, delete the commit you don't want (just delete the whole line), and save
• force push git push --force