Move nightwatch.conf.js out of root directory

I'm using nightwatch.js to run tests, and would like to declutter the root directory of my app. Is it possible for nightwatch to run with nightwatch.conf.js anywhere other than the root directory? Something like

App
|
 - Test
     |
      - NightwatchTests
     |
      - nightwatch.conf.js
.
.
.

Instead of

App
|
 - Test
     |
      - NightwatchTests   
.
.
.
 - nightwatch.conf.js

via RYS