Ignore new NSObject properties introduced with iOS 8#4

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robm wants to merge 3 commits intoshjborage:masterfrom

Commits on Sep 29, 2014

Ignore propertied introduced with iOS 8
Robert Manea
committed
fixed typo
Robert Manea
committed

Commits on Sep 30, 2014

Extracted property inclusion logic into method
Robert Manea
committed