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

Gem::Specification.new do |s|
  s.name = %q{rhubarb}
  s.version = Rhubarb::Version::STRING
  s.authors = ["Dan Swain"]
  s.date = Time.now.utc.strftime("%Y-%m-%d")
  s.email = %q{dan.t.swain@gmail.com}
  s.files = `git ls-files`.split("\n")
  s.homepage = %q{http://github.com/dantswain/rhubarb}
  s.rdoc_options = ["--charset=UTF-8"]
  s.require_paths = ["lib"]
  s.rubygems_version = %q{1.8.11}
  s.summary = %q{A lightweight and extensible IPC server}
  s.test_files = `git ls-files spec examples`.split("\n")
  # tests
  s.add_development_dependency 'rspec'
end```

Switch to using rake to determine gemspec files - git ls-files not well-supported on windows.
user
```ruby
require File.expand_path('lib/rhubarb/version', File.dirname(__FILE__))
require 'rake'

Gem::Specification.new do |s|
  s.name = %q{rhubarb}
  s.version = Rhubarb::Version::STRING
  s.authors = ["Dan Swain"]
  s.date = Time.now.utc.strftime("%Y-%m-%d")
  s.email = %q{dan.t.swain@gmail.com}
  s.files = FileList['lib/**/*.rb', 'bin/*', '[A-Za-z]*',
                     'spec/**/*',
                     'clients/*'].to_a
  s.homepage = %q{http://github.com/dantswain/rhubarb}
  s.rdoc_options = ["--charset=UTF-8"]
  s.require_paths = ["lib"]
  s.rubygems_version = %q{1.8.11}
  s.summary = %q{A lightweight and extensible IPC server}
  s.test_files = FileList['spec/**/*'].to_a
  # tests
  s.add_development_dependency 'rspec'
end```
assistant