Upgraded RuboCop to 0.27.0, rewritten yml via a todo yml.

.rubocop.yml

@@ -1,36 +1,5 @@
 AllCops:
-  Excludes:
+  Exclude:
     - vendor/**/*
 
-LineLength:
-  Enabled: false
-
-MethodLength:
-  Enabled: false
-
-ClassLength:
-  Enabled: false
-
-Documentation:
-  # don't require classes to be documented
-  Enabled: false
-
-Encoding:
-  # no need to always specify encoding
-  Enabled: false
-
-FileName:
-  # allow grape-swagger.rb
-  Enabled: false
-
-PredicateName:
-  Enabled: false
-
-DoubleNegation:
-  Enabled: false
-
-CyclomaticComplexity:
-  Enabled: false
-
-ClassVars:
-  Enabled: false
+inherit_from: .rubocop_todo.yml

.rubocop_todo.yml

@@ -0,0 +1,55 @@
+# This configuration was generated by `rubocop --auto-gen-config`
+# on 2014-11-10 14:38:32 -0500 using RuboCop version 0.27.0.
+# 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
+# versions of RuboCop, may require this file to be generated again.
+
+# Offense count: 8
+Metrics/AbcSize:
+  Max: 332
+
+# Offense count: 1
+# Configuration parameters: CountComments.
+Metrics/ClassLength:
+  Max: 385
+
+# Offense count: 4
+Metrics/CyclomaticComplexity:
+  Max: 92
+
+# Offense count: 209
+# Configuration parameters: AllowURI, URISchemes.
+Metrics/LineLength:
+  Max: 254
+
+# Offense count: 11
+# Configuration parameters: CountComments.
+Metrics/MethodLength:
+  Max: 354
+
+# Offense count: 4
+Metrics/PerceivedComplexity:
+  Max: 98
+
+# Offense count: 7
+Style/ClassVars:
+  Enabled: false
+
+# Offense count: 62
+Style/Documentation:
+  Enabled: false
+
+# Offense count: 2
+Style/DoubleNegation:
+  Enabled: false
+
+# Offense count: 3
+# Configuration parameters: Exclude.
+Style/FileName:
+  Enabled: false
+
+# Offense count: 1
+# Configuration parameters: NamePrefix, NamePrefixBlacklist.
+Style/PredicateName:
+  Enabled: false

grape-swagger.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'bundler'
   s.add_development_dependency 'rack-test'
   s.add_development_dependency 'rack-cors'
-  s.add_development_dependency 'rubocop', '0.24.1'
+  s.add_development_dependency 'rubocop', '0.27.0'
   s.add_development_dependency 'kramdown', '~> 1.4.1'
   s.add_development_dependency 'redcarpet', '~> 3.1.2' unless RUBY_PLATFORM.eql? 'java'
   s.add_development_dependency 'rouge', '~> 1.6.1'