add support for pixar.com

[treaki]

hi,

could you please add support for pixar.com so i can view them without flash:

username@hostname:/tmp$ youtube-dl --verbose http://www.pixar.com/video/3790
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'--verbose', u'http://www.pixar.com/video/3790']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.09.24
[debug] Python version 2.7.9 - Linux-4.2.0-0.bpo.1-amd64-x86_64-with-debian-8.5
[debug] exe versions: ffmpeg 2.8.6, ffprobe 2.8.6, rtmpdump 2.4
[debug] Proxy map: {}
[generic] 3790: Requesting header
WARNING: Falling back on generic information extractor.
[generic] 3790: Downloading webpage
[generic] 3790: Extracting information
[debug] Invoking downloader on u'http://www.pixar.com/video/3790'
[download] Destination: Pixar-3790.unknown_video
[download] 100% of 17.49KiB in 00:00
username@hostname:/tmp$ file Pixar-3790.unknown_video 
Pixar-3790.unknown_video: HTML document, ASCII text, with very long lines, with CRLF, LF line terminators

thanks

[OndrejIT]

I'm working...