Create a new NSManagedObject with init method (Xcode 7.2 Swift 2.1 ) from: http://stackoverflow.com/a/33583941

NSManagedObject.swift

extension NSManagedObject {

    // Returns the unqualified class name, i.e. the last component.
    // Can be overridden in a subclass.
    class func entityName() -> String {
        return String(self)
    }

    convenience init(context: NSManagedObjectContext) {
        let eName = self.dynamicType.entityName()
        let entity = NSEntityDescription.entityForName(eName, inManagedObjectContext: context)!
        self.init(entity: entity, insertIntoManagedObjectContext: context)
    }
}