```ruby
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'cronut/version'

Gem::Specification.new do |spec|
  spec.name          = 'cronut'
  spec.version       = Cronut::VERSION
  spec.authors       = ['Josh McMillan']
  spec.email         = ['josh@joshmcmillan.co.uk']

  spec.summary       = 'A simple cron parser'
  spec.homepage      = 'https://github.com/mcmillan/cronut'
  spec.license       = 'MIT'

  spec.files         = `git ls-files -z`.split("\x0").reject do |f|
    f.match(%r{^(test|spec|features)/})
  end

  spec.bindir        = 'bin'
  spec.executables   = ['bin/cronut']
  spec.require_paths = ['lib']

  spec.add_development_dependency 'bundler', '~> 1.14'
  spec.add_development_dependency 'rake', '~> 10.0'
  spec.add_development_dependency 'rspec', '~> 3.0'
end
```

Fix executable name in gemspec
user
```ruby
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'cronut/version'

Gem::Specification.new do |spec|
  spec.name          = 'cronut'
  spec.version       = Cronut::VERSION
  spec.authors       = ['Josh McMillan']
  spec.email         = ['josh@joshmcmillan.co.uk']

  spec.summary       = 'A simple cron parser'
  spec.homepage      = 'https://github.com/mcmillan/cronut'
  spec.license       = 'MIT'

  spec.files         = `git ls-files -z`.split("\x0").reject do |f|
    f.match(%r{^(test|spec|features)/})
  end

  spec.bindir        = 'bin'
  spec.executables   = ['cronut']
  spec.require_paths = ['lib']

  spec.add_development_dependency 'bundler', '~> 1.14'
  spec.add_development_dependency 'rake', '~> 10.0'
  spec.add_development_dependency 'rspec', '~> 3.0'
end
```
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