```ruby
$:.push File.expand_path("../lib", __FILE__)

Gem::Specification.new do |s|
  s.name        = "chef-handler-slack"
  s.version     = "0.1.0"
  s.authors     = ["Derek Smith"]
  s.email       = ["derek@slack-corp.com"]
  s.homepage    = "https://github.com/tinyspeck/chef-handler-slack"
  s.summary     = %q{Chef reports generated to a channel in Slack}
  s.description = %q{Chef reports generated to a channel in Slack}
  s.license     = "MIT"


  s.files         = `git ls-files`.split("\n")
  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
  s.require_paths = ["lib"]

  s.add_development_dependency "rspec"
  s.add_development_dependency "rake"
  s.add_development_dependency "chef"
end
```

Add bundle as a dev dependency
user
```ruby
$:.push File.expand_path("../lib", __FILE__)

Gem::Specification.new do |s|
  s.name          = "chef-handler-slack"
  s.version       = "0.1.0"
  s.authors       = ["Derek Smith"]
  s.email         = ["derek@slack-corp.com"]
  s.homepage      = "https://github.com/tinyspeck/chef-handler-slack"
  s.summary       = %q{Chef reports generated to a channel in Slack}
  s.description   = %q{Chef reports generated to a channel in Slack}
  s.license       = "MIT"

  s.files         = `git ls-files -z`.split("\x0")
  s.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  s.test_files    = spec.files.grep(%r{^(test|spec|features)/})
  s.require_paths = ["lib"]

  s.add_development_dependency "bundler", "~> 1.6"
  s.add_development_dependency "rake"
  s.add_development_dependency "rspec"
  s.add_development_dependency "chef"
end
```
assistant