lowered nokogiri requirements due to conflict with vagrant-vcenter (rbvmomi VMODL problem)
added new standard rubocop config file
updated sync_folders.rb to the latest version with support for Vagrant 1.4+
Code cleanup, first pass (still missing documentation)
Merge branch 'feature/code_cleanup' into develop

* feature/code_cleanup:
  Code cleanup, first pass (still missing documentation)
  updated sync_folders.rb to the latest version with support for Vagrant 1.4+
  added new standard rubocop config file
  lowered nokogiri requirements due to conflict with vagrant-vcenter (rbvmomi VMODL problem)

Conflicts:
	.rubocop.yml
Added back the standard rubocop file