update README with details of how to expand the image
update README with details of how to expand the image

arthurbarr/mq-container,arthurbarr/mq-container,ibm-messaging/mq-container,ibm-messaging/mq-container,ibm-messaging/mq-container,arthurbarr/mq-container,parrobe/mq-container,parrobe/mq-container,parrobe/mq-container,ibm-messaging/mq-container