add/improve support for ted.com

[Siddhant]

C:\Users\siddhant\Downloads>youtube-dl.exe --verbose http://www.ted.com/watch/ted-institute/ted-bcg/vishal-sikka-the-beauty-and-power-of-algorithms
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'http://www.ted.com/watch/ted-institute/ted-bcg/vishal-sikka-the-beauty-and-power-of-algorithms']
[debug] Encodings: locale 'cp1252', fs 'mbcs', out 'cp437', pref: 'cp1252'
[debug] youtube-dl version 2014.03.25.1
[debug] Python version 2.7.5 - Windows-7-6.1.7601-SP1
[debug] Proxy map: {}
[generic] vishal-sikka-the-beauty-and-power-of-algorithms: Requesting header
WARNING: Falling back on generic information extractor.
[generic] vishal-sikka-the-beauty-and-power-of-algorithms: Downloading webpage
[generic] vishal-sikka-the-beauty-and-power-of-algorithms: Extracting information
ERROR: Unsupported URL: http://www.ted.com/watch/ted-institute/ted-bcg/vishal-sikka-the-beauty-and-power-of-algorithms; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.
Traceback (most recent call last):
File "youtube_dl\extractor\generic.pyo", line 360, in _real_extract
File "youtube_dl\utils.pyo", line 1312, in parse_xml
File "xml\etree\ElementTree.pyo", line 1300, in XML
File "xml\etree\ElementTree.pyo", line 1642, in feed
File "xml\etree\ElementTree.pyo", line 1506, in _raiseerror
ParseError: mismatched tag: line 75, column 11
Traceback (most recent call last):
File "youtube_dl\YoutubeDL.pyo", line 506, in extract_info
File "youtube_dl\extractor\common.pyo", line 161, in extract
File "youtube_dl\extractor\generic.pyo", line 588, in _real_extract
ExtractorError: Unsupported URL: http://www.ted.com/watch/ted-institute/ted-bcg/vishal-sikka-the-beauty-and-power-of-algorithms; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.

[phihag]

Thank you for the report. Support for the new-style watch/ TED URLs has been added in youtube-dl 2014.03.27. Type youtube-dl -U to update.