Support for NHL Videocenter sites

[doguitar]

Example url: http://video.kings.nhl.com/videocenter/

[jaimeMF]

Added support, you'll need to copy the url from the share menu for videos in http://video.kings.nhl.com/videocenter/, for example: http://video.kings.nhl.com/videocenter/console?id=455508

[doguitar]

I was hoping to be able to download the latest X videos similar to how the youtube extractor works. The video ids appear to be in the images below in the images tags.

<img id="_whatsnew_img_1" src="http://nhl.cdnllnwnl.neulion.net/u/kings/thumbs/2013/10/10/455508_es.jpg" __decreased__="element">

[jaimeMF]

I have added support for it, for now it will download the last 12 videos. If you want to download more, comment here and I'll look into it or open a new issue so that we don't forget it.
If you find any problem, please open a new issue.