func getUserCredential(username:String,password:String)->UserModel
     {
        var authenticatedUser  = UserModel()
        let user = username
        let password = password

        let credential = NSURLCredential(user: user, password: password, persistence: .ForSession)

        Alamofire.request(.GET, "https://httpbin.org/basic-auth/(user)/(password)")
            .authenticate(usingCredential: credential)
            .responseJSON { response in
                print("response (response)");
                if let validResponse = response.result.value as? [String : AnyObject]
                {
                    for resp  in validResponse
                    {
                        let user:String = resp.1 as! String
                        let isAuthenticated:Bool =  resp.0 as! Bool
                        let isManager:Bool = true
                        authenticatedUser = UserModel(username:user,isAuthenticated:isAuthenticated,isManager:isManager)
                    }
                }
                else if let error = response.result.error
                {
                    print("Error: (error)")
                }
        }
        return authenticatedUser;
     }