What kinds of reporter can I use?

[TonyPythoneer]

In this document, I hadn't seen what kinds of reporter user can use.

I look up this commander by help. It only shows the default is text.

Would you explain clearly in this document? Thx.

[TonyPythoneer]

Finally, I know what kinds of reporter I can use. -- link: https://github.com/istanbuljs/istanbul-reports/tree/master/lib

But it's still unclearly, I hope it can show the output style and paste the picture on README at least.

[bcoe]

@TonyPythoneer let's add a section to the README.md that links to the istanbul reports project, rather than just saying "we support all of istanbul's reporters".