DateFormatter.swift

    lazy var dateFormatter:NSDateFormatter = {
        var dateFormatter:NSDateFormatter?
        var __dispatchToken: dispatch_once_t = 0
        dispatch_once(&__dispatchToken) {
            dateFormatter = NSDateFormatter()
            /**
             setting the default locale to Germany // for USA use us_US
             */
            dateFormatter?.locale = NSLocale(localeIdentifier: "de_DE")
            /**
             set date style as you want
             */
            dateFormatter?.dateStyle = .ShortStyle;
            dateFormatter?.timeStyle = .ShortStyle;
            
            /**
             UTC DateStrings e.g. 2015-08-28T09:07:50 
             dateFormatter?.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
             
            UTC DataString e.g 2015-04-17T13:30:00+02:00
            dateFormater?.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZ"
             */
        }
        return dateFormatter!
   }()