Working with pages
Is there any plan that enable us to work with Sketch [Pages](https://www.sketchapp.com/learn/documentation/grouping/pages/) ?

As our design grows, it might be nice to group together views with the same theme between them by using the pages.

For now, it only possible to add blank page using the `context`'s `document` object. But we cannot rename or remove one of them.

__Extract of [`src/types.js`](https://github.com/airbnb/react-sketchapp/blob/master/src/types.js#L16) file__

```js
export type SketchPage = {
  name: () => NSString
};

export type SketchDocument = {
  documentData: () => SketchDocumentData,
  pages: () => MSArray<SketchPage>,
  addBlankPage: () => SketchPage,
  currentPage: SketchPage
};
```

__Edit:__ Looking better I found a way to change the page name using the `setName` method (e.g. [`src/symbol.js`](https://github.com/airbnb/react-sketchapp/blob/2500505c7e23578a702771e10d0bf8292ac3594f/src/symbol.js#L94))