Run only the Selenium 3 tests on Travis
Run only the Selenium 3 tests on Travis

We should slowly deprecate support for Selenium 2, since Selenium 3 has
been out for many months and Selenium2 does not support recent browsers.

RaviTezu/selenium,tebeka/selenium,RaviTezu/selenium,tebeka/selenium,tebeka/selenium,RaviTezu/selenium