First implementation of getStyleInfo

getStyleInfo returns a simplified JSON format to make it easier to convert to CSS
I realize getDocumentInfo doesn't require a docID -- I wish it did. :smile: That's the very first function that was ever written, and well, we made bad decisions. I also realize that it isn't stated anywhere that we want to avoid new functionality that doesn't specify doc ID, so it's perfectly understandable that you implemented it the way you did.

Anyway, looking elsewhere in generator.js probably the best thing to do is return a rejected Promise with an appropriate error message.  You can do this with:

```js
return Q.reject("documentId parameter is required in call to _getStyleInfo")
```

Also, don't forget to update the JSDoc to say that it's required.