update setup instructions
update setup instructions

Original commit: elastic/x-pack-elasticsearch@e5dfdf4ff4e3ad48d325cd21c87a72d83ac34208

strapdata/elassandra,scorpionvicky/elasticsearch,gingerwizard/elasticsearch,strapdata/elassandra,robin13/elasticsearch,robin13/elasticsearch,gfyoung/elasticsearch,vroyer/elassandra,coding0011/elasticsearch,HonzaKral/elasticsearch,GlenRSmith/elasticsearch,gfyoung/elasticsearch,uschindler/elasticsearch,strapdata/elassandra,uschindler/elasticsearch,coding0011/elasticsearch,coding0011/elasticsearch,scorpionvicky/elasticsearch,gingerwizard/elasticsearch,HonzaKral/elasticsearch,GlenRSmith/elasticsearch,gingerwizard/elasticsearch,gingerwizard/elasticsearch,robin13/elasticsearch,coding0011/elasticsearch,scorpionvicky/elasticsearch,nknize/elasticsearch,nknize/elasticsearch,gfyoung/elasticsearch,uschindler/elasticsearch,vroyer/elassandra,GlenRSmith/elasticsearch,robin13/elasticsearch,gingerwizard/elasticsearch,nknize/elasticsearch,gfyoung/elasticsearch,strapdata/elassandra,scorpionvicky/elasticsearch,gfyoung/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch,robin13/elasticsearch,scorpionvicky/elasticsearch,gingerwizard/elasticsearch,uschindler/elasticsearch,nknize/elasticsearch,GlenRSmith/elasticsearch,strapdata/elassandra,coding0011/elasticsearch,uschindler/elasticsearch,HonzaKral/elasticsearch,vroyer/elassandra,gingerwizard/elasticsearch,HonzaKral/elasticsearch