I managed to render the grid with this configuration: -

View:

  <ng-include src="'/umbraco/views/propertyeditors/grid/grid.html'"></ng-include>

Controller:

$scope.model.config: {
                            items:{

                                styles:[
                                    {
                                        label: "Set a background image",
                                        description: "Set a row background",
                                        key: "background-image",
                                        view: "imagepicker",
                                        modifier: "url({0})"
                                    }
                                ],
                                config:[
                                    {
                                        label: "Class",
                                        description: "Set a css class",
                                        key: "class",
                                        view: "textstring"
                                    }
                                ],
                                columns: 12,
                                templates:[
                                    {
                                        name: "1 column layout",
                                        sections: [
                                            {
                                                grid: 12,
                                            }
                                        ]
                                    },
                                    {
                                        name: "2 column layout",
                                        sections: [
                                            {
                                                grid: 4,
                                            },
                                            {
                                                grid: 8
                                            }
                                        ]
                                    }
                                ],


                                layouts:[
                                    {
                                        name: "Headline",
                                        areas: [
                                            {
                                                grid: 12,
                                                editors: ["headline"]
                                            }
                                        ]
                                    },
                                    {
                                        name: "Article",
                                        areas: [
                                            {
                                                grid: 12
                                            },
                                            {
                                                grid: 4
                                            },
                                            {
                                                grid: 8
                                            },
                                            {
                                                grid: 12
                                            }
                                        ]
                                    }
                                ]
                                }

                            }
                        }