bundle update selenium-webdriver

to fix error:
unable to obtain stable firefox connection in 60 seconds (127.0.0.1:7055) (Selenium::WebDriver::Error::WebDriverError)
Fix failing test

<Sun, 31 Mar 2013 00:00:00 GMT +00:00> expected but was
<Sun, 30 Mar 2014 00:00:00 GMT +00:00>.