feat(gen): Generators should generate a .yo-rc.json file

See http://yeoman.io/blog/cleanup.html for details
Merge commit '53cbe0258a25eac9c8b31ae2cc9a2abed80ea3a8'

* commit '53cbe0258a25eac9c8b31ae2cc9a2abed80ea3a8':
  feat(gen): Generators should generate a .yo-rc.json file