Properly generate a gem for Windows OS

Description

The gem specification gathers all necessary files to include within the gem utilizing the Unix file command. I have not been able to determine any means to indicate that the built is execute in a windows platform, hence requiring the Dir.glob command.

Swagger-codegen version

Swagger Codegen version: 3.0.24

Related issues/PRs

Issue: Properly generate a gem for Windows OS
PR: Add support for passing client key password (keypasswd). Added logic …

Swagger declaration file content or url

Gem::Specification.new do |s|
  s.name        = "swagger_client"
  s.version     = SwaggerClient::VERSION
  s.platform    = Gem::Platform::RUBY
  s.authors     = ["Swagger-Codegen"]
  s.email       = ["joe@me.email"]
  s.homepage    = "https://github.com/swagger-api/swagger-codegen"
  s.summary     = "API summary Ruby Gem"
  s.description = "API description..."
  s.license     = "Unlicense"
  s.required_ruby_version = ">= 1.9"

  s.add_runtime_dependency 'typhoeus', '~> 1.0', '>= 1.0.1'
  s.add_runtime_dependency 'json', '~> 2.1', '>= 2.1.0'

  s.add_development_dependency 'rspec', '~> 3.6', '>= 3.6.0'

  s.files         = `find *`.split("\n").uniq.sort.select { |f| !f.empty? }
  s.test_files    = `find spec/*`.split("\n")
  s.executables   = []
  s.require_paths = ["lib"]
end

Command line used for generation

Generated the client SDK via the Swagger Editor

Steps to reproduce

Suggest a fix/enhancement

Gem::Specification.new do |s|
  s.name        = "swagger_client"
  s.version     = SwaggerClient::VERSION
  s.platform    = Gem::Platform::RUBY
  s.authors     = ["Swagger-Codegen"]
  s.email       = ["joe@me.email"]
  s.homepage    = "https://github.com/swagger-api/swagger-codegen"
  s.summary     = "API summary Ruby Gem"
  s.description = "API description..."
  s.license     = "Unlicense"
  s.required_ruby_version = ">= 1.9"

  s.add_runtime_dependency 'typhoeus', '~> 1.0', '>= 1.0.1'
  s.add_runtime_dependency 'json', '~> 2.1', '>= 2.1.0'

  s.add_development_dependency 'rspec', '~> 3.6', '>= 3.6.0'

  s.files = Dir.glob('lib/**/*') + %w{Rakefile README.md}
  s.executables   = []
  s.require_paths = ["lib"]
end

Find the generated Ruby gem specification template that uses the Unix find command and compare it with the suggested Dir.glob approach. Check how the gem file list and test files are assembled, then verify that a generated gem includes the expected lib files, Rakefile, and README on Windows.