Adding rubocop to style check

Also repaired rubocop violations
Updating for serverspec 2.x

Tests now pass in ubuntu, but fail in centos.
Added rubocop style checking.

+ Added rubocop style checking to rake.
+ Also fixed all rubocop violations.
Removing style commit, for now.
Merge pull request #35 from justinredd/master

Updating for serverspec 2.x

thanks for the PR @justinredd!  Apologies for the delay.  Travel :-/