Add more inline comments/documentation

config/rubocop-layout.yml

@@ -1,3 +1,8 @@
+# Layout cops inspect your code for consistent use of indentation, alignment,
+# and white space.
+#
+# @see https://docs.rubocop.org/rubocop/cops_layout.html
+
 Layout/ClassStructure:
   Enabled: true
   ExpectedOrder:

config/rubocop-lint.yml

@@ -1,2 +1,6 @@
+# Lint cops check for ambiguities and possible errors in your code.
+#
+# @see https://docs.rubocop.org/rubocop/cops_lint.html
+
 Lint/HeredocMethodCallPosition:
   Enabled: true

config/rubocop-metrics.yml

@@ -1,3 +1,8 @@
+# Metrics cops deal with properties of the source code that can be measured,
+# such as class length, method length, etc.
+#
+# @see https://docs.rubocop.org/rubocop/cops_metrics.html
+
 Metrics/BlockLength:
   CountAsOne:
     - array

config/rubocop-naming.yml

@@ -1,3 +1,8 @@
+# Naming cops check for naming issue of your code, such as method name, constant
+# name, file name, etc.
+#
+# @see https://docs.rubocop.org/rubocop/cops_naming.html
+
 Naming/InclusiveLanguage:
   Enabled: true
 

config/rubocop-performance.yml

@@ -1,3 +1,10 @@
+# A collection of RuboCop cops to check for performance optimizations in Ruby
+# code.
+#
+# @see https://rubygems.org/gems/rubocop-performance
+# @see https://docs.rubocop.org/rubocop-performance
+# @see https://github.com/rubocop/rubocop-performance
+
 require: rubocop-performance
 
 Performance/ChainArrayAllocation:

config/rubocop-rake.yml

@@ -1 +1,6 @@
+# A RuboCop plugin for Rake.
+#
+# @see https://rubygems.org/gems/rubocop-rake
+# @see https://github.com/rubocop/rubocop-rake
+
 require: rubocop-rake

config/rubocop-style.yml

@@ -1,3 +1,8 @@
+# Style cops check for stylistic consistency of your code. Many of the them are
+# based on the Ruby Style Guide.
+#
+# @see https://docs.rubocop.org/rubocop/cops_style.html
+
 Style/ArrayCoercion:
   Enabled: true
 

config/rubocop.yml

@@ -1,3 +1,10 @@
+# RuboCop is a Ruby code style checking and code formatting tool. It aims to
+# enforce the community-driven Ruby Style Guide.
+#
+# @see https://rubygems.org/gems/rubocop
+# @see https://docs.rubocop.org/rubocop
+# @see https://github.com/rubocop/rubocop
+
 inherit_from:
   - ./rubocop-layout.yml
   - ./rubocop-lint.yml