rubocop fixes

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2017-06-17 22:15:11 +0300 using RuboCop version 0.47.0.
+# on 2017-07-11 00:59:31 +0100 using RuboCop version 0.47.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -44,6 +44,11 @@ Metrics/ModuleLength:
 Metrics/PerceivedComplexity:
   Max: 14
 
+# Offense count: 2
+Style/BlockDelimiters:
+  Exclude:
+    - 'spec/grape/middleware/formatter_spec.rb'
+
 # Offense count: 2
 Style/IdenticalConditionalBranches:
   Exclude: