Added another cherry-picked commit to the Mesos package README.
Added another cherry-picked commit to the Mesos package README.

kensipe/dcos,mesosphere-mergebot/mergebot-test-dcos,mesosphere-mergebot/mergebot-test-dcos,kensipe/dcos,mesosphere-mergebot/dcos,branden/dcos,dcos/dcos,branden/dcos,mesosphere-mergebot/mergebot-test-dcos,amitaekbote/dcos,mellenburg/dcos,GoelDeepak/dcos,amitaekbote/dcos,mellenburg/dcos,BenWhitehead/dcos,mellenburg/dcos,GoelDeepak/dcos,GoelDeepak/dcos,surdy/dcos,branden/dcos,dcos/dcos,kensipe/dcos,lingmann/dcos,BenWhitehead/dcos,mesosphere-mergebot/dcos,BenWhitehead/dcos,dcos/dcos,branden/dcos,surdy/dcos,dcos/dcos,mesosphere-mergebot/dcos,mellenburg/dcos,mesosphere-mergebot/dcos,BenWhitehead/dcos,amitaekbote/dcos,dcos/dcos,mesosphere-mergebot/mergebot-test-dcos,kensipe/dcos,surdy/dcos,lingmann/dcos,GoelDeepak/dcos,lingmann/dcos,surdy/dcos,lingmann/dcos,amitaekbote/dcos