readme markdown injection does not include the table of contents

I have `documentation.js@5.3.2` installed as a dev-dependency and am using it with an npm script configured as follows

> `documentation readme -s Documentation src/**`

Previously I was doing:

> `documentation build src/** -f md -o docs.md`

The README injection works like a charm. But I was a bit disappointed that I no longer get a table of contents. I'm not sure if I'm missing some relevant option, but if not, it would be awesome if this feature were supported.