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

Gem::Specification.new do |spec|
  spec.name          = 'pragma-rails'
  spec.version       = Pragma::Rails::VERSION
  spec.authors       = ['Alessandro Desantis']
  spec.email         = ['desa.alessandro@gmail.com']

  spec.summary       = 'Ruby on Rails integration for the Pragma architecture.'
  spec.homepage      = 'https://github.com/pragmarb/pragma-rails'
  spec.license       = 'MIT'

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

  spec.add_development_dependency 'bundler'
  spec.add_development_dependency 'rake'
  spec.add_development_dependency 'rspec'
  spec.add_development_dependency 'rubocop'
  spec.add_development_dependency 'rubocop-rspec'
  spec.add_development_dependency 'coveralls'
end
```

Add Pragma and Rails dependencies
user
```ruby
# coding: utf-8
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'pragma/rails/version'

Gem::Specification.new do |spec|
  spec.name          = 'pragma-rails'
  spec.version       = Pragma::Rails::VERSION
  spec.authors       = ['Alessandro Desantis']
  spec.email         = ['desa.alessandro@gmail.com']

  spec.summary       = 'Ruby on Rails integration for the Pragma architecture.'
  spec.homepage      = 'https://github.com/pragmarb/pragma-rails'
  spec.license       = 'MIT'

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

  spec.add_dependency 'pragma', '~> 0.1.0'
  spec.add_dependency 'rails', '>= 4.2.0', '< 6'

  spec.add_development_dependency 'bundler'
  spec.add_development_dependency 'rake'
  spec.add_development_dependency 'rspec'
  spec.add_development_dependency 'rubocop'
  spec.add_development_dependency 'rubocop-rspec'
  spec.add_development_dependency 'coveralls'
end
```
assistant