```ruby
version = '3.0.0'

Gem::Specification.new do |s|
  s.platform    = Gem::Platform::RUBY
  s.name        = 'spree_related_products'
  s.version     = version
  s.summary     = 'Allows multiple types of relationships between products to be defined'
  s.required_ruby_version = '>= 1.8.7'

  s.files        = Dir['README.markdown', 'lib/**/*']
  s.require_path = 'lib'
  s.requirements << 'none'

  s.has_rdoc = true

  s.add_dependency('spree_core',  '0.30.0.beta1')
end
```

Include config dir files in gemspec
user
```ruby
version = '3.0.1'

Gem::Specification.new do |s|
  s.platform    = Gem::Platform::RUBY
  s.name        = 'spree_related_products'
  s.version     = version
  s.summary     = 'Allows multiple types of relationships between products to be defined'
  s.required_ruby_version = '>= 1.8.7'

  s.files        = Dir['README.markdown', 'lib/**/*', 'app/**/*', 'config/*']
  s.require_path = 'lib'
  s.requirements << 'none'

  s.has_rdoc = true

  s.add_dependency('spree_core',  '0.30.0.beta1')
end
```
assistant