Explicitly enable new cops in pro

Author: alexeyr

react_on_rails_pro/.rubocop.yml

@@ -2,6 +2,7 @@
 inherit_from: ../.rubocop.yml
 
 AllCops:
+  EnableNewCops: true
   Exclude:
   <% `git status --ignored --porcelain`.lines.grep(/^!! /).each do |path| %>
     - <%= path.sub(/^!! /, '') %>