```ruby
require File.expand_path('../lib/cli/version', __FILE__)

Gem::Specification.new do |spec| 
  spec.name        = 'dtk-client'
  spec.version     = DTK::Client::CLI::VERSION
  spec.author      = 'Reactor8'
  spec.email       = 'support@reactor8.com'
  spec.description = %q{Command line tool to interact with a DTK Server and DTK Service Catalog.}
  spec.summary     = %q{DTK CLI client for DTK server interaction.}
  spec.license     = 'Apache 2.0'
  spec.platform    = Gem::Platform::RUBY
  spec.required_ruby_version = Gem::Requirement.new('>= 1.9.3')

  spec.require_paths = ['lib']
  spec.files =  `git ls-files`.split("\n")

  spec.executables   = spec.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})

  spec.add_dependency 'dtk-common-core','0.9.0'
  spec.add_dependency 'gli', '2.13.4'
  spec.add_dependency 'highline', '1.7.8'
  spec.add_dependency 'colorize', '0.7.7'
  spec.add_dependency 'git', '1.2.9'	 
end
```

Add hirb as dependency in gemspec
user
```ruby
require File.expand_path('../lib/cli/version', __FILE__)

Gem::Specification.new do |spec| 
  spec.name        = 'dtk-client'
  spec.version     = DTK::Client::CLI::VERSION
  spec.author      = 'Reactor8'
  spec.email       = 'support@reactor8.com'
  spec.description = %q{Command line tool to interact with a DTK Server and DTK Service Catalog.}
  spec.summary     = %q{DTK CLI client for DTK server interaction.}
  spec.license     = 'Apache 2.0'
  spec.platform    = Gem::Platform::RUBY
  spec.required_ruby_version = Gem::Requirement.new('>= 1.9.3')

  spec.require_paths = ['lib']
  spec.files =  `git ls-files`.split("\n")

  spec.executables   = spec.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})

  spec.add_dependency 'dtk-common-core','0.9.0'
  spec.add_dependency 'gli', '2.13.4'
  spec.add_dependency 'highline', '1.7.8'
  spec.add_dependency 'colorize', '0.7.7'
  spec.add_dependency 'git', '1.2.9'
  spec.add_dependency 'hirb', '0.7.3'
end
```
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