Added support for Windows environment
Merge pull request #20 from pschulz/#16

Added support for Windows environment
Update Yeoman.scala

able to define which gruntfile to use (in case you have a couple).

Note: This seems to compile but is untested. I think the string concat for building the gruntfile name is wrong. I only just started messing with sbt settings so i'm not sure what's the right way to do this. I'm sure it's an easy fix for anyone with some sbt settings knowledge.
Merge pull request #22 from samzilverberg/master

Update Yeoman.scala in sbt plugin to be able to specify a gruntfile name
Merge branch 'master' into HEAD
Update Play to 2.2.0, sbt to 0.13 and version to 0.6.2.