Examples:
 1. Upload some content
   $ curl -d "some content" file.swurl.xyz/content.txt
   file.swurl.xyz/41789941bf7ea0ee/content.txt

 2. Upload some content from a file
  $ curl file.swurl.xyz/content.txt --data-binary @content.txt
   file.swurl.xyz/4466af6a05b4cc29/content.txt

 3. Deleting a file
   $ TMP=$(mktemp)
   $ LINK=$(curl -sS file.swurl.xyz/content.txt -d "some content" -D $TMP)
   $ # File created, headers stored in temp file
   $ DEL=$(cat $TMP | grep -i delete-with | awk '{print$2}'| tr -d '\r')
   $ # Gets the deletion key, in the 'X-Delete-With' header
   $ curl $LINK
   some content
   $ curl $LINK -X DELETE -d $DEL
   $ curl $LINK
   Not found
   $ # File has been deleted