func getDataFromJSON(){
    //Calling getCollectionViewData from the RestParser class
    RestParser.sharedInstance.getConfig{json in
        //iterating to the JSON file to get alle data
        let results = json[0]["menu"]
        for (index: String,cofigData:JSON)in results{
          self.items.append(cofigData)
        }
        let testString: String = items["title"]
        self.btnCollectionView.setTitle(testString, forState: UIControlState.Normal)
    }
}