Get rid of Ruby 1.8.7, since Rails 4/master is 1.9.3+
Get rid of Ruby 1.8.7, since Rails 4/master is 1.9.3+

If someone needs 1.8.7 to test anything in Rails, it's always possible
to add to a personal manifest.

plataformatec/puppet-rails_contributor,plataformatec/puppet-rails_contributor