Add queue

Addition doesn't seem to work in Firefox. Is this the case for anyone else?
Thanks!
Generally if you are wanting a boolean answer, you use a question mark method.  You could write the method like this:

```
def video_in_queue
  QueueVideo.find_by(video_id: params[:video_id]).present?
end
```

If you want more information about the `present?` method, you can start at http://api.rubyonrails.org/classes/Object.html#method-i-present-3F