title: Differences between view controllers
body: <p>Hi I'm new to Xcode and don't quite understand the difference between all the view controllers. Eg what is the difference between a uiviewcontroller with a collection view on it and a uicollectionview controller it self? Confused as to why I wouldn't use a view controller then add views onto it depending on my requirements eh table, collection etc. Can anyone help to shed some light?</p>