Add site support for testtube.com

[JThundley]

Testtube.com hosts Dnews of the Discovery channel. Most videos are scientific in nature. Here is the output when trying to download an episode:

https://testtube.com/dnews/5-weird-ways-plants-can-eat-animals?utm_source=FB&utm_medium=DNews&utm_campaign=DNewsSocial
[generic] 5-weird-ways-plants-can-eat-animals?utm_source=FB&utm_medium=DNews&utm_campaign=DNewsSocial: Requesting header
WARNING: Falling back on generic information extractor.
[generic] 5-weird-ways-plants-can-eat-animals?utm_source=FB&utm_medium=DNews&utm_campaign=DNewsSocial: Downloading webpage
[generic] 5-weird-ways-plants-can-eat-animals?utm_source=FB&utm_medium=DNews&utm_campaign=DNewsSocial: Extracting information
ERROR: Unsupported URL: https://testtube.com/dnews/5-weird-ways-plants-can-eat-animals?utm_source=FB&utm_medium=DNews&utm_campaign=DNewsSocial

[phihag]

Thank you for the report. youtube-dl 2015.01.23.1 and newer add support for testtube. See our FAQ if you need help updating.

[JThundley]

Thanks, you rock!

On Thu, Jan 22, 2015 at 3:34 PM, Philipp Hagemeister <
notifications@github.com> wrote:

Thank you for the report. youtube-dl 2015.01.23.1 and newer add support
for testtube. See our FAQ https://yt-dl.org/update if you need help
updating.

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