Fixes #54 updating Selenium and making use of the new HideCommandPromptWindow property to avoid showing the command windows used by the drivers for ie, chrome and phantomjs based on http://yizeng.me/2014/03/05/hide-command-prompt-window-in-selenium-webdriver-net-binding/
Merge pull request #55 from scottcowan/hotfix/command-window

Fixes #54 updating Selenium and making use of the new HideCommandPromptW...