debug mode

[benmosher]

Would be helpful to get more output in cases like #299, #238.

Would also help self-service in cases where it's just some simple config issue / typo (i.e. config not found).

[sindresorhus]

I would use debug, and then use it like this:

DEBUG=eslint-plugin-import eslint .

[benmosher]

Ah, cool idea. I have only used that in the browser before, forgot it was born for Node.

[benmosher]

done in webpack resolver (v0.3.1), will expand as needed