runner.rb in rubocop-git-0.0.5

- old
+ new

@@ -9,9 +9,11 @@
 
         @options = options
         @files = DiffParser.parse(git_diff(options))
 
         display_violations($stdout)
+        
+        exit(1) if violations.any?
       end
 
       private
 
       def violations