```ruby
Gem::Specification.new do |s|
  s.name      = 'sprockets-redirect'
  s.version   = '0.3.0'
  s.date      = '2014-12-30'

  s.homepage    = "https://github.com/sikachu/sprockets-redirect"
  s.summary     = "Redirect assets with no digest request to a filename with digest version."
  s.description = <<-EOS
    Rack middleware which will look up your `public/assets/manifest.yml` and
    redirect a request with no digest in the file name to the version with
    digest in the file name.
  EOS

  s.files = [
    'lib/sprockets-redirect.rb',
    'lib/sprockets/redirect.rb',
    'LICENSE',
    'README.md'
  ]

  s.platform = Gem::Platform::RUBY
  s.require_path = "lib"
  s.extra_rdoc_files  = Dir["README*"]

  s.add_dependency 'rack'
  s.add_dependency 'activesupport', '>= 3.1.0'
  s.add_development_dependency 'appraisal', '>= 1.0.0.beta2'
  s.add_development_dependency 'bundler'
  s.add_development_dependency 'mocha'
  s.add_development_dependency 'rake'
  s.add_development_dependency 'rack-test'
  s.add_development_dependency 'rails'

  s.authors           = ["Prem Sichanugrist"]
  s.email             = "s@sikac.hu"
end
```

Update style in gemspec file
user
```ruby
Gem::Specification.new do |s|
  s.name        = "sprockets-redirect"
  s.version     = "0.3.0"
  s.authors     = ["Prem Sichanugrist"]
  s.email       = "s@sikac.hu"

  s.homepage    = "https://github.com/sikachu/sprockets-redirect"
  s.summary     = "Redirect assets with no digest request to a filename with digest version."
  s.description = <<-EOS
    Rack middleware which will look up your `public/assets/manifest.yml` and
    redirect a request with no digest in the file name to the version with
    digest in the file name.
  EOS
  s.license           = "MIT"

  s.files = [
    "lib/sprockets-redirect.rb",
    "lib/sprockets/redirect.rb",
    "LICENSE",
    "README.md"
  ]

  s.platform = Gem::Platform::RUBY
  s.require_path = "lib"
  s.extra_rdoc_files  = Dir["README*"]

  s.add_dependency "rack"
  s.add_dependency "activesupport", ">= 3.1.0"
  s.add_development_dependency "appraisal", ">= 1.0.0.beta2"
  s.add_development_dependency "bundler"
  s.add_development_dependency "mocha"
  s.add_development_dependency "rake"
  s.add_development_dependency "rack-test"
  s.add_development_dependency "rails"
end
```
assistant