Easy installation and use of chromedriver

 chromedriver-helper installs an executable, chromedriver-helper, in your gem
 path, and configures Selenium to invoke it as the web driver.
 .
 This script will, if necessary, download the appropriate binary for your
 platform and install it into ~/.chromedriver-helper, then exec it. Easy peasy!
 .
 Individual projects can even select which version of chromedriver they want to
 run.