A method to grab the live chat from YouTube

• Requires qwarc and realpath from GNU coreutils 8.23+.
• Execute as livechat VIDEOID where VIDEOID is the 11-character video ID from YouTube.
• You can pass multiple video IDs at once as well: livechat VIDEOID1 VIDEOID2 .... They get executed sequentially. (To capture multiple streams’ chat simultaneously, run livechat multiple times instead!)
• All live chats (i.e. “top” and “all”) are grabbed.