Fix new youtube issue

[kjsmita6]

So I updated youtube to the newest version, but I am getting an error everytime I start up my bot. It goes something like this:

2015-05-01T04:05:56.396Z - error: TypeError: Cannot read property 'params' of null
    at YoutubeTrigger._respond (/Users/Kyle/node_modules/steam-chat-bot/lib/triggers/youtubeTrigger.js:44:27)
    at YoutubeTrigger._respondToChatMessage (/Users/Kyle/node_modules/steam-chat-bot/lib/triggers/youtubeTrigger.js:39:14)
    at BaseTrigger.onChatMessage (/Users/Kyle/node_modules/steam-chat-bot/lib/triggers/baseTrigger.js:86:27)
    at /Users/Kyle/node_modules/steam-chat-bot/lib/chatBot.js:478:41
    at Function._.each._.forEach (/Users/Kyle/node_modules/steam-chat-bot/node_modules/underscore/underscore.js:158:9)
    at ChatBot._onChatMsg (/Users/Kyle/node_modules/steam-chat-bot/lib/chatBot.js:477:5)
    at SteamClient.<anonymous> (/Users/Kyle/node_modules/steam-chat-bot/lib/chatBot.js:127:91)
    at SteamClient.emit (events.js:118:17)
    at SteamClient.handlers.(anonymous function) (/Users/Kyle/node_modules/steam/lib/handlers/friends.js:261:8)
    at SteamClient._netMsgReceived (/Users/Kyle/node_modules/steam/lib/steam_client.js:106:26)

If anyone knows how to fix it, please open a pull request, as I have no idea how.