groc javascript documentor - arguments to document all subdirectories

Using the node.js npm package what is the command (osx bash $ groc) to create documentation for files in path/to/thisDirectory and all subdirectories?

$ cd path/to/thisDirectory
$ groc App/scripts/**/*.js

The above only processes files one level deeper than /scripts/ and none above or below ... which makes sense!

I probably just need to know the syntax for getting subdirectories. I couldn't find info anywhere else.

Globbing?

In the groc manual, it says you should quote the globbed path to let groc do the expansion:

$ groc "App/scripts/**/*.js"