GitantBomb - add ServicePrefs.json
GiantBomb - update to use user's own API key when available
GiantBomb - fix stupid mistakes
JustinTV - catch Twitch.TV urls too
GiantBomb - append user api key to hd video urls
Merge pull request #587 from mikedm139/giantbomb

Giantbomb - update to use user-provided api key for premium content