ServantのCSVファイルダウンロードのサンプル
$ curl -i http://127.0.0.1:8081/csv/UNdata_Export_pork HTTP/1.1 200 OK Transfer-Encoding: chunked Date: Mon, 20 Jun 2016 16:12:16 GMT Server: Warp/3.2.9 Content-Type: application/csv "Country or Area","Year","Unit","Value","Value Footnotes" "Albania","2013","Mil. USD","3.86207176515949","" "Albania","2013","Thousand metric tons","0.8","" "Albania","2012","Mil. USD","3.17974879791774","" "Albania","2012","Thousand metric tons","0.8",""
