* Working directory fix for submodule update
The git submodule update for googletest must be run from the script's root directory
* Added try-finally block around Push-Location
Great recommendation from @vors!
The edit is a best practice incase the user Ctrl-C's out of the script.
Tested locally by exiting out of:
try { Push-Location C:\Users\; Start-Sleep -Seconds 60 } finally { Pop-Location }
