Adds ability to add event listeners for content+ads ended, not just content ended.
Adds ability to add event listeners for content+ads ended, not just content ended.

chacbumbum/videojs-ima,fem-inc/videojs-ima,ypavlotsky/videojs-ima,shawnbuso/videojs-ima,valse/videojs-ima,tv2/videojs-ima,tape-tv/videojs-ima,goskipstone/videojs-ima,ypavlotsky/videojs-ima,goskipstone/videojs-ima,chacbumbum/videojs-ima,valse/videojs-ima,googleads/videojs-ima,tape-tv/videojs-ima,fem-inc/videojs-ima,tv2/videojs-ima,shawnbuso/videojs-ima,googleads/videojs-ima