Shouldn't `scalastyleGenerateConfig ` be defined only `in ThisBuild`

[Kwestor]

This is not a big issue, but it seems file is now generated N times, when you have sub-modules in your project:

> scalastyleGenerateConfig
[success] created: C:\Users\Jerzy\Documents\GitHub\unicorn\scalastyle-config.xml
[success] created: C:\Users\Jerzy\Documents\GitHub\unicorn\scalastyle-config.xml
[success] created: C:\Users\Jerzy\Documents\GitHub\unicorn\scalastyle-config.xml
[success] Total time: 0 s, completed 2015-02-08 12:23:57

[matthewfarwell]

Uh, yes. I'll see if I can do something nice.

[Kwestor]

I think defining it as scalastyleGenerateConfig in ThisBuild := ... should do the job.

I can check and issue a PR later, don't have time for this now.