Slack report: CustomCollectionView-Swift sample crashes

[george-gw]

The crash report was posted by dviet on slack:

Crash:

2017-04-18 14:39:48.931 Sample[8738:181740] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Range max width must be infinite or a real positive integer.'

Link:

https://asyncdisplaykit.slack.com/conversation/C0V63R86T/p1492501729673862

[bolsinga]

It appears this was fixed by #22