Make sure extracted binary is executable.
Make sure extracted binary is executable.

Also be explicit that we need Archive::Zip#extract to overwrite what's
on disk.

Lastly, prefer FileUtils.rm_f to File.delete.

flavorjones/chromedriver-helper,flavorjones/chromedriver-helper,smoll/chromedriver-helper,flavorjones/chromedriver-helper,smoll/chromedriver-helper