Simple rubocop configuration for Rails

.rubocop.yml

require:
  - rubocop-rails
  - rubocop-performance

AllCops:
  Exclude:
    - 'bin/**/*'
    - 'db/schema.rb'
    - 'node_modules/**/*'
    - 'vendor/**/*'

Layout/AlignArguments:
  Enabled: true
  EnforcedStyle: with_fixed_indentation
Metrics/BlockLength:
  Enabled: true
  Exclude:
    - 'config/initializers/devise.rb'
Metrics/LineLength:
  Enabled: true
  Max: 120
Metrics/MethodLength:
  Enabled: true
  Exclude:
    - 'db/migrate/*'
SkipsModelValidations:
  Enabled: false
Style/ClassAndModuleChildren:
  Enabled: true
  EnforcedStyle: compact
  Exclude:
    - 'config/application.rb'
Style/Documentation:
  Enabled: false
Style/TrailingCommaInHashLiteral:
  Enabled: true
  EnforcedStyleForMultiline: comma