plugins.vaughnlive: updated player version and info URL (#383)
plugins.vaughnlive: updated player version and info URL (#383)

* plugins.vaughnlive: updated player version and info URL

* plugins.vaughnlive: print a more user-friendly error when the stream is unavailable

bastimeyer/streamlink,streamlink/streamlink,javiercantero/streamlink,melmorabity/streamlink,back-to/streamlink,gravyboat/streamlink,gravyboat/streamlink,chhe/streamlink,streamlink/streamlink,chhe/streamlink,wlerin/streamlink,beardypig/streamlink,melmorabity/streamlink,javiercantero/streamlink,mmetak/streamlink,bastimeyer/streamlink,back-to/streamlink,mmetak/streamlink,wlerin/streamlink,beardypig/streamlink