updated GoutteDriver to actually support Symfony2 client
updated GoutteDriver to actually support Symfony2 client

minkphp/Mink,benji07/Mink,Chekote/Mink,tomav/Mink,handrus/Mink,benji07/Mink,jordi12100/Mink,ministryofjustice/Mink,Behat/Mink,jhedstrom/Mink,minkphp/Mink,aik099/Mink,talib570/Mink,jhedstrom/Mink,stof/Mink,Chekote/Mink,talib570/Mink,tomav/Mink,jordi12100/Mink