Add Rubocop

- Pull in the 37signals house style
- Autofix violations
- Add to CI

test/integration/integration_test.rb

@@ -11,7 +11,7 @@ class IntegrationTest < ActiveSupport::TestCase
 
   teardown do
     unless passed?
-      [:deployer, :vm1, :vm2, :shared, :load_balancer, :registry].each do |container|
+      [ :deployer, :vm1, :vm2, :shared, :load_balancer, :registry ].each do |container|
         puts
         puts "Logs for #{container}:"
         docker_compose :logs, container