Added in the ability for the Selenium 2 driver to get the window names of open windows. Related directly to: https://github.com/Behat/Mink/pull/341
Changed $this->session to $this->getSession().
Added in a new test to make sure that functionally the getWindowName functions work.
Updated some documentation.
Removed a duplicate test.
Merge remote-tracking branch 'pthurmond/master'