Add ability to configure where modules are located

[Mokto]

Hi,

I'm developing a boilerplate for react-native and mantra.

My only option to rename my src directory intro "client".

Would it be possible to let users configure where modules are ?

Thanks !

[Mokto]

Cf this file : https://github.com/mantrajs/mantrajs-atom-package/blob/master/lib/moduleHandler.coffee