Examples:
 1. Create a short link to https://duckduckgo.com
   $ curl -d https://duckduckgo.com link.char-sole.ts.net; echo
   link.char-sole.ts.net/502fb5543c36014f

 2. Create a short link with a custom path
  $ curl -d https://duckduckgo.com link.char-sole.ts.net/ddg; echo
   link.char-sole.ts.net/ddg

 3. Create a short link to https://duckduckgo.com using a query string
   $ curl link.char-sole.ts.net?https://duckduckgo.com; echo
   link.char-sole.ts.net/1acd382417199d7e

 4. Create a short link with a custom path using a query string
   $ curl link.char-sole.ts.net/ddg?https://duckduckgo.com; echo
   link.char-sole.ts.net/ddg

 5. Deleting a short link
   $ TMP=$(mktemp)
   $ LINK=$(curl -sS link.char-sole.ts.net -d https://duckduckgo.com -D $TMP)
   $ # Link 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; echo
   <a href="https://duckduckgo.com">Permanent Redirect</a>.
   $ curl $LINK -X DELETE -d $DEL
   $ curl $LINK; echo
   this short link does not exist
   $ # Link has been deleted