Added stop-kafka.sh script.
Added stop-kafka.sh script.

tmarrs/json-at-work-examples,tmarrs/json-at-work,tmarrs/json-at-work-examples,tmarrs/json-at-work,tmarrs/json-at-work,tmarrs/json-at-work-examples,tmarrs/json-at-work-examples,tmarrs/json-at-work,tmarrs/json-at-work-examples