Removed the nib files and build collection/table views in code instead

Title says it all. The two nib files in the project worked in the example project, but got all crashy when using it as a pod. It's something to do with the bundle, and rather than fighting with it, I just yanked out the nibs: they only contained a table view and collection view, so it wasn't a complicated procedure.

@vokalinteractive/ios-developers could someone give this a review?

Since @lquigley is out this week, so PING PING PING co-sponsor @designatednerd.
Conceptually I'm good with nuking the included `.xibs`, but I think we may want to leave this and the corresponding collection view controller below exposed as an `IBOutlet` so that if someone wants to use storyboards to set this up, they can. Just check in `viewDidLoad` if this is nil, and if it is, set it up programmatically.