Fixed Tudou
Add support for 5sing
remove trailing whitespace
remove trailing whitespace
YouTube: new algo
changed youku url
Merge branch 'greatdg-fixedtudou'
prefer ffmpeg_concat_mp4_to_mp4
added ehow.com
修正pptv视频地址解析
Added Khan Academy support (videos downloaded from YouTube)
Added TED.com video downloader

Closes #56
Fixed a bug: no parameters were getting passed to the youtube_download_by_id() function
Merge branch 'ted' of https://github.com/rumith/you-get into rumith-ted
Merge branch 'khan' of https://github.com/rumith/you-get into rumith-khan

Conflicts:
	src/you_get/downloader/__init__.py
Merge branch 'addehow' of https://github.com/greatdg/you-get into greatdg-addehow
YouTube: new algo
Xiami: do not raise exception if no lyric found
YouTube: new algo
version 0.3.20