Refactor ftp_servers method
Refactor ftp_servers method

xing/paperclip-storage-ftp,xing/paperclip-storage-ftp,1000ideas/paperclip-storage-ftp,mlankenau/paperclip-storage-ftp,mlankenau/paperclip-storage-ftp,toao/paperclip-storage-ftp,toao/paperclip-storage-ftp