Update README.asciidoc
Update README.asciidoc

Original commit: elastic/x-pack-elasticsearch@679c5ff71b8f071d074ba60e96073dd9770b268d

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