Use youtube-dl as a library

[redapple]

I got frustrated about the lack of progress information when running steve-cmd fetch, so I wanted to use youtube-dl as a library to get metadata from playlists

Sample output for PyCon India 2015

• steve.ini
• console log
• sample JSON file

@willkg , what can I test other than YouTube playlists?

[codersquid]

@redapple channels are a good thing to test. I scrape those too.

[redapple]

@codersquid , worked for PyCon PL channel: https://gist.github.com/redapple/9a411c369110a1f071d1

https://github.com/pyvideo/pyvideo/issues/141 https://www.youtube.com/channel/UChSapCUgd_L5nBWIqWucnnQ