Add detailed documentation examples for main categories of API calls

[theextremeprogrammer]

Categories might be:

• Checking if a view exists which matches the desired criteria (UILabel, UIButton, UITextView, ...)

• Finding views (UILabel, UIButton, UITextView, ...)

• Tapping elements (UIButton, UIBarButtonItem, ...)
  etc..

• For each example use a screenshot from an app with an easy-to-see arrow pointing to the UI element and the test method being used

[theextremeprogrammer]

Something worth looking into? https://developer.apple.com/documentation/docc/tutorial-syntax