Fixed README.md example.
Fixed README.md example.

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