changed matchApiKey to validateApiKey and initialized instance and apikey to null - #26
Removed UserVoiceSDK.setApiKey and install() calls
changed UserVoiceSDK.instance test assertion from 'new Array' to 'null'
changed UserVoiceSDK.apiKey test assertion from 'new String' to 'null'
wrapped UserVoiceSDK.apiKey assertion in Meteor.startup call - resolves #26