Create download dir.

download-yt-feeds.sh

@@ -53,6 +53,7 @@ function main()
     [[ -z "${keep_for_days}" ]] && die 2 "keep_for_days not specified."
     [[ -z "${ytdl_format}" ]] && local ytdl_format="best"
 
+    mkdir -p "${download_dir}"
     local -a feedlist=("${(@Q)${(z)$(read_feedlist)}}")
     for feed in ${feedlist}; do
         youtube-dl \