[youtube] Add generator for signature 92
added an IE for ex.fm
added test for ex.fm
corrected a typo and added myself to travis notifications.
removed some unnecessary imports
forgot to import json json
Merge pull request #1068 from MiLk/genalgo-youtube-92

[youtube] Add generator for signature 92
YoutubeIE: add algo for length 90 (closes #1064)

Order the cases from higher to lower length.
Remove the test to signature of lengths 43,43

It's already covered by the test for length 87
release 2013.07.18
Hint that --update may need sudo
InstagramIE: fix the extraction of the uploader_id and the title

The page title is now 'Instagram', so we build it.
Also extract the description
Add SinaIE (related #1039): extractor for video.sina.com.cn
Add an extractor for 56.com (related #1039)
Add WeiboIE (closes #1039)

It just embed video from other sites.
Modified the _VALID_URL of Youku to catch embed urls.
TEDIE: fix the title extraction
YoutubeIE: new algo for length 85 (closes #1080), thanks to @patrickslin
WeiboIE: extract the player urls from a json webpage

Also extract a Sina url that doesn't require to follow a redirection.
release 2013.07.19
Merge remote-tracking branch 'yasoob/master'