My Rubucop Settings

.rubocop.yml

# https://github.com/bbatsov/rubocop/blob/master/config/default.yml
AllCops:
  TargetRubyVersion: 2.2

  # Don't check Ruby files that aren't application code
  Exclude:
    - 'Gemfile'
    - 'Rakefile'
    - 'bin/**/*'
    - 'config/**/*'
    - 'db/schema.rb'
    - 'db/seeds.rb'
    - 'spec/rails_helper.rb'
    - 'spec/spec_helper.rb'

# Don't restrict length of modules/files
Metrics/ModuleLength:
  Enabled: false

# Allow braces for blocks that mainly return a value, including RSpec lets and
# subjects
Style/BlockDelimiters:
  EnforcedStyle: semantic

# Don't require a class comment
Style/Documentation:
  Enabled: false

# Always use double-quoted string literals
Style/StringLiterals:
  EnforcedStyle: double_quotes

# Don't require thousand separators
Style/NumericLiterals:
  Enabled: false

# Require trailing commas for multiline arrays/hashes
Style/TrailingCommaInLiteral:
  EnforcedStyleForMultiline: comma

# Allow but do not require modifier usage of if/unless
Style/IfUnlessModifier:
  Enabled: false