Issue when the view controller's view is tableView/collectionView

[MarvinNazari]

Hi Awesome project, but we have an issue when the view of the UIViewController is an UITableview
(example below)

class VC: UIViewController {
    override func loadView() {
        view = UITableView()
    }
}

so it adds the loadingView/emptyView inside of the tableView

[aschuch]

The default implementation of the StatefulViewController protocol uses the UIViewController's view as its backingView. I usually just add the UITableView to the view so I haven't personally run into this issue.

You can, however, always override the backingView property and return a custom view where the placeholder views should be added.

[AnthonyMDev]

This might be able to be fixed by using the ContainerViewStateMachine implementation from PR #29 as the default implementation for all view controllers.

It seems that, in order to handle odd little corner cases like this, it is safer to use a privately managed container view, rather than relying on the view of the UIViewController.

[AnthonyMDev]

In fact, rather than adding the views for the states to the backingView it may be better to do a transition FROM the view of the controller to our state view and then back.

[aschuch]

I've pushed some changes to master that allow for better support of UITableViewController and UICollectionViewController (thanks @AnthonyMDev).
@MarvinNazari Please take a look and report any issues. Thanks! ✌️