.rubocop.yml in grumlin-0.18.1 vs .rubocop.yml in grumlin-0.19.0

@@ -13,9 +13,10 @@
     - spec/**/*_spec.rb
 
 Metrics/BlockLength:
   Exclude:
     - spec/**/*_spec.rb
+    - "*.gemspec"
 
 Metrics/MethodLength:
   Max: 20
 
 Metrics/ParameterLists: