Merge remote-tracking branch 'mnem/gdc-vault'

diff --combined youtube_dl/extractor/__init__.py
index 8549a1a1e4ae8d8b7471ac7ae4618a58ceba0784,60aa97636d0390724c3fa89903849349ff114aff..2f8fcb8c998614256aeffe4d5b7a981a59900d1d
--- 1/youtube_dl/extractor/__init__.py
--- 2/youtube_dl/extractor/__init__.py
+++ b/youtube_dl/extractor/__init__.py
@@@ -89,6 -89,7 +89,7 @@@ from .funnyordie import FunnyOrDieI
  from .gamekings import GamekingsIE
  from .gamespot import GameSpotIE
  from .gametrailers import GametrailersIE
+ from .gdcvault import GDCVaultIE
  from .generic import GenericIE
  from .googleplus import GooglePlusIE
  from .googlesearch import GoogleSearchIE
@@@ -175,7 -176,6 +176,7 @@@ from .podomatic import PodomaticI
  from .pornhd import PornHdIE
  from .pornhub import PornHubIE
  from .pornotube import PornotubeIE
 +from .prosiebensat1 import ProSiebenSat1IE
  from .pyvideo import PyvideoIE
  from .radiofrance import RadioFranceIE
  from .rbmaradio import RBMARadioIE