Improved README.
Improved README.

rednut/docker-elasticsearch,rednut/docker-elasticsearch,cargonauts/consul-elasticsearch,CanTireInnovations/docker-elasticsearch,crccheck/docker-pod,eliotk/elasticsearch-docker-beta,jainishshah17/elasticsearch,rednut/docker-elasticsearch,nautsio/consul-elasticsearch,rednut/docker-elasticsearch,crccheck/docker-pod,kastner/elasticsearch-docker,LastManStanding/elasticsearch,n42corp/elasticsearch,yaronr/elasticsearch,gogeolbs/elasticsearch,crccheck/docker-pod