Is applyPatches() exposed in the API?

I'm trying to use `JsDiff.applyPatches()` on v2.1.0 of your npm package, but i get the error

```
TypeError: Object #<Object> has no method 'applyPatches'
    // ...
```

A quick look at `index.js` indicates that only `applyPatch` is exposed, as I don't see `applyPatches` there:

``` JavaScript
import {applyPatch} from './patch/apply';
```
