[abcgo] Add new extractor

This patch adds an extractor for abc.go.com. The test case url is
unfortunately only available for a few weeks before it expires.

youtube_dl/extractor/abcgo.py

@@ -0,0 +1,37 @@
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+
+class AbcGoIE(InfoExtractor):
+    IE_NAME = 'abc.go.com'
+    _VALID_URL = r'http://abc.go.com/shows/(?P<id>.*)'
+    _TEST = {
+        'url': 'http://abc.go.com/shows/marvels-agents-of-shield/episode-guide/season-03/17-the-team',
+        'info_dict': {
+            'id': '0_ebiua3ib',
+            'ext': 'mp4',
+            'title': 'The Team',
+            'description': 'S.H.I.E.L.D. learns more about Hive\'s powers.',
+            'uploader_id': 'KMCMigrator',
+            'timestamp': 1461160081,
+            'upload_date': '20160420',
+        },
+        'params': {
+            'skip_download': True
+        }
+    }
+
+    PARTNER_ID='585231'
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        webpage = self._download_webpage(url, video_id)
+
+        video_id = self._html_search_regex(r'vp:video="VDKA(.*?)"', webpage,
+            'id')
+
+        return {
+            '_type': 'url',
+            'url': 'kaltura:%s:%s' % (self.PARTNER_ID, video_id),
+            'ie_key': 'Kaltura',
+        }

youtube_dl/extractor/extractors.py

@@ -3,6 +3,7 @@ from __future__ import unicode_literals
 
 from .abc import ABCIE
 from .abc7news import Abc7NewsIE
+from .abcgo import AbcGoIE
 from .academicearth import AcademicEarthCourseIE
 from .acast import (
     ACastIE,