```ruby
# coding: utf-8
# frozen_string_literal: true
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'mnemosyne/version'

Gem::Specification.new do |spec|
  spec.name          = 'mnemosyne-ruby'
  spec.version       = Mnemosyne::VERSION
  spec.authors       = ['Jan Graichen']
  spec.email         = ['jgraichen@altimos.de']

  spec.summary       = 'Ruby/Rails client for Mnemosynce'
  spec.homepage      = 'http://github.com/jgraichen/mnemosyne-ruby'
  spec.license       = 'MIT'

  spec.files         = `git ls-files -z`.split("\x0").reject {|f| f.match(%r{^(test|spec|features)/}) }
  spec.bindir        = 'bin'
  spec.executables   = spec.files.grep(%r{^exe/}) {|f| File.basename(f) }
  spec.require_paths = %w(lib)

  spec.add_runtime_dependency 'bunny'
  spec.add_runtime_dependency 'activesupport', '>= 4'

  spec.add_development_dependency 'bundler', '~> 1.11'
  spec.add_development_dependency 'rake', '~> 10.0'
  spec.add_development_dependency 'rspec', '~> 3.0'
  spec.add_development_dependency 'timecop', '~> 0.8.0'
end
```

Add rubocop as dev dependency
user
```ruby
# coding: utf-8
# frozen_string_literal: true
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'mnemosyne/version'

Gem::Specification.new do |spec|
  spec.name          = 'mnemosyne-ruby'
  spec.version       = Mnemosyne::VERSION
  spec.authors       = ['Jan Graichen']
  spec.email         = ['jgraichen@altimos.de']

  spec.summary       = 'Ruby/Rails client for Mnemosynce'
  spec.homepage      = 'http://github.com/jgraichen/mnemosyne-ruby'
  spec.license       = 'MIT'

  spec.files         = `git ls-files -z`.split("\x0").reject {|f| f.match(%r{^(test|spec|features)/}) }
  spec.bindir        = 'bin'
  spec.executables   = spec.files.grep(%r{^exe/}) {|f| File.basename(f) }
  spec.require_paths = %w(lib)

  spec.add_runtime_dependency 'bunny'
  spec.add_runtime_dependency 'activesupport', '>= 4'

  spec.add_development_dependency 'bundler', '~> 1.11'
  spec.add_development_dependency 'rake', '~> 10.0'
  spec.add_development_dependency 'rspec', '~> 3.0'
  spec.add_development_dependency 'timecop', '~> 0.8.0'
  spec.add_development_dependency 'rubocop', '~> 0.47.1'
end
```
assistant