[racket] RacketCon 2013 videos

Hi all,

The higher-quality talk recordings for RacketCon are now up on Youtube.
This playlist has all of the talks:

  http://www.youtube.com/playlist?list=PLXr4KViVC0qLyXpinlARzSDWaQTCzaGw3

They're also linked from the 2013 page's schedule.

Let me know if anything seems broken.

Some notes: the first few minutes of Jay's talk got cut off due to some
technical problems. You can watch the missing portion in the Google
Hangout version (it's linked in the video description).

Also, in some talks the audio is silent at the start because the mic was
off. In all cases, the audio should come on in a few seconds.

Cheers,
Asumu