NSViewControllerPresentation

A small demo of NSViewController's present and dismiss methods, including custom NSViewControllerPresentationAnimator object

Examples provided for the following methods:

– presentViewController:asPopoverRelativeToRect:ofView:preferredEdge:behavior:  
– presentViewControllerAsModalWindow:  
– presentViewControllerAsSheet:  
– presentViewController:animator:  

For comparison, behaviour is also be provided using NSStoryboardSegues:
"Popover", "Sheet" and "Modal" are built-in segues corresponding to the respective presentViewController: methods
"Custom" segue is similar to presentViewController:animator and expects a custom NSStoryboardSegue and custom animator object.
"Show" segue launches an NSViewController in a new window with no return-relationship (i.e. no presenting/presented relationship)

For the animator/custom example, a custom NSStoryboardSegue subclass is provided, alongside a custom object conforming to the NSViewControllerPresentationAnimator protocol.

These are shown in Objective-C and Swift versions for comparison. ~~Check the comment in MyCustomSwiftSegue - there's a Swift-only gotcha waiting to trip you up~~ (see also this [Stack Overflow question]( http://stackoverflow.com/questions/26876609/nsstoryboardsegue-sample-code-yosemite-storyboard?lq=1 question)).