Copy checkDomain fixture from developer repo
HTTP/1.1 200 OK
Server: nginx
Date: Fri, 26 Feb 2016 16:04:05 GMT
Content-Type: application/json; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Status: 200 OK
X-RateLimit-Limit: 4000
X-RateLimit-Remaining: 3999
X-RateLimit-Reset: 1456506245
ETag: W/"f3cf8499e935e48401aae26842f712c4"
Cache-Control: max-age=0, private, must-revalidate
X-Request-Id: e3c6fac1-a36d-42c3-8a04-d68f127add18
X-Runtime: 0.605907
Strict-Transport-Security: max-age=31536000

{"data":{"domain":"ruby.codes","available":true,"premium":true}}