.rubocop.yml in lignite-0.4.0 vs .rubocop.yml in lignite-0.5.0

@@ -18,9 +18,14 @@
   Enabled: false
 
 Style/SymbolArray:
   Enabled: false
 
+# self.sleep is Ev3Ops#sleep, sleep is Kernel#sleep
+Style/RedundantSelf:
+  Exclude:
+    - spec/data/*.rb
+
 Metrics/BlockLength:
   Exclude:
     - lignite.gemspec
     - lib/lignite/ev3_tool.rb
     - spec/**/*.rb