$scope.signIn = function () {
            $scope.showMessage = false;
            var params = "grant_type=password&username=" + $scope.username + "&password=" + $scope.password;
            $http({
                url: '/Token',
                method: "POST",
                headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
                data: params
            })
            .success(function (data, status, headers, config) {
                $http.defaults.headers.common.Authorization = "Bearer " + data.access_token;
                window.location = "/Dashboard#/";
            })
            .error(function (data, status, headers, config) {
                $scope.message = data.error_description.replace(/["']{1}/gi, "");
                $scope.showMessage = true;
            });
        }