This is the composer dependency you want if you happen to do some Behat testing with Selenium. It will download the adequat chromedriver version for your dev platform, whether it's Linux (32bits or 64bits), OSX or Windows.
Use it like a regular composer dependency, although it's a composer plugin.
composer require lbaey/chromedriver
Feel free to contribute, PR's are read and welcome
If you use se/selenium-server-standalone, run it with
./bin/selenium-server-standalone -Dwebdriver.chrome.driver=$PWD/bin/chromedriver