shell> curl -X POST --data-binary @- --dump - http://localhost:8529/_api/document?collection=products&createCollection=true <<EOF
{ "Hello": "World" }
EOF

HTTP/1.1 202 Accepted
content-type: application/json; charset=utf-8
etag: "709227403"
location: /_db/_system/_api/document/products/709227403

{ 
  "error" : false, 
  "_id" : "products/709227403", 
  "_rev" : "709227403", 
  "_key" : "709227403" 
}