Swift 2.0 no longer supports the find() free function. You can use the indexOf() method on a collection instead.
For example, you can change this code:
let index = find(tempBundleList, themeBundleEntity!)
To this:
let index = tempBundleList.indexOf(themeBundleEntity!)
All the best!
Kevin McNeish
Author of "Learn to Code in Swift":
https://itunes.apple.com/us/book/learn-to-code-in-swift/id942956811?mt=11