Add QueueItem and associate with Video, User
Add QueueItemsController and change routes
Add QueueItems index
Delegate queue item's variable, use what you should see from outside view, e.g. queue_item.video_title
Show queue item's position in my_queue page and in ASC order
User can queue a video without duplicate
User can remove a queue item
Revise after look at the solution.
Revise review_fabricator
Merge pull request #4 from jychen7/week2b

Week2b