72213468 keep current with rubocop

The Jenkins command needs to change to:

bundle exec rubocop --require rubocop/formatter/checkstyle_formatter --format RuboCop::Formatter::CheckstyleFormatter --lint app/ lib/

I tested this locally on my VM using:

diff --git a/Gemfile b/Gemfile
index 12bc6cb..b0b9e44 100644
--- a/Gemfile
+++ b/Gemfile
@@ -127,7 +127,7 @@ group :development do
   gem 'better_errors'
   gem 'binding_of_caller'
   gem 'rubocop'
-  gem 'rubocop-checkstyle_formatter', git: 'ssh://git@git.sjc.kongregate.com/kongregate/rubocop-checkstyle_formatter.git'
+  gem 'rubocop-checkstyle_formatter', git: 'ssh://git@git.sjc.kongregate.com/kongregate/rubocop-checkstyle_formatter.git', :branch => '72213468_keep_current_with_rubocop'
   gem 'traceroute'
 end