Add xDebug to readme, and also fix cisco readme
Add xDebug to readme, and also fix cisco readme

dsilambarasan/stack_dev,aliaksei-yakhnenka/pubstack,ericduran/pubstack,NBCUTechnology/pubstack,dsilambarasan/stack_dev,aliaksei-yakhnenka/pubstack,NBCUTechnology/pubstack,ericduran/pubstack