[RuboCop] Add RuboCop
tabs->spaces & 80 line max
Merge branch 'jp-0.0.5' into seg-rubocop

* jp-0.0.5:
  [XMLHelper] Add XMLHelper module

Conflicts:
	lib/jazzy.rb
Merge pull request #51 from realm/seg-rubocop

[RuboCop] Add RuboCop