Please check for AC power again prior to starting upgrade

[Coros]

Script currently checks for AC power when initiating this workflow. Please add another check prior to beginning the upgrade (after download but prior to running startosinstall). This will prevent people from passing the first check and immediately disconnecting power so they can move around. I currently do this on my own and would love to not have to recustomize the script each time you publish an update. Thanks.

[patgmac]

I currently do this on my own and would love to not have to recustomize the script each time you publish an update.

If you've already done the work, how about submitting a pull request?