API Restructuring and New Presentation Methods

WARNING!
This update might break your existing implementation

• present(on:completion:) has been changed.

Previously

present(on viewController: UIViewController? = nil, completion: (() -> Void)? = nil)

Now

present(on viewController: UIViewController, completion: (() -> Void)? = nil)

With this new approach, use this method to present modally on a view controller.

• present(_:) added.

present(_ completion: (() -> Void)? = nil)

This method presents the alert on window.

• dismiss(_:) added.

dismiss(_ completion: (() -> Void)? = nil)

This method dismisses the alert.

• setAttributedTextForMessage(_:) has been renamed to setAttributedMessageText(_:)