System#os.version should know OS 10.10 Yosemite.
System#os.version should know OS 10.10 Yosemite.

https://github.com/ariya/phantomjs/issues/12579

kinwahlai/phantomjs-ghostdriver,kinwahlai/phantomjs-ghostdriver,kinwahlai/phantomjs-ghostdriver,kinwahlai/phantomjs-ghostdriver,kinwahlai/phantomjs-ghostdriver,kinwahlai/phantomjs-ghostdriver,kinwahlai/phantomjs-ghostdriver