Xcode 6.1 upgrade
Fix OS X 10.10 warnings

NSApplication was updated in Yosemite to have delegate as a true property, not a getter/setter pair which implicitly behaves as a property. Because of this and because NSApp is of type 'id' not NSApplication*, the only definition of delegate: / setDelegate: methods visible to the compiler is from NSFileManager.
Merge pull request #341 from barijaona/YosemiteSDK

Yosemite SDK