For warnings like:

Category is implementing a method which will also be implemented by its primary class

override them, using:

#pragma clang diagnostic push

#pragma clang diagnostic ignored “-Wobjc-protocol-method-implementation”

// do your override

#pragma clang diagnostic pop

http://stackoverflow.com/questions/9424004/suppress-warning-category-is-implementing-a-method-which-will-also-be-implement