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

Gem::Specification.new do |spec|
  spec.name          = "benchmark-perf"
  spec.version       = Benchmark::Perf::VERSION
  spec.authors       = ["Piotr Murach"]
  spec.email         = ["me@piotrmurach.com"]
  spec.summary       = %q{Execution time and iteration performance benchmarking}
  spec.description   = %q{Execution time and iteration performance benchmarking}
  spec.homepage      = ""
  spec.license       = "MIT"

  spec.files         = Dir['{lib,spec}/**/*.rb']
  spec.files        += Dir['tasks/*', 'benchmark-perf.gemspec']
  spec.files        += Dir['README.md', 'CHANGELOG.md', 'LICENSE.txt', 'Rakefile']
  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.test_files    = spec.files.grep(%r{^spec/})
  spec.require_paths = ["lib"]

  spec.required_ruby_version = '>= 2.0.0'

  spec.add_development_dependency 'bundler', '>= 1.16'
  spec.add_development_dependency 'rspec', '~> 3.0'
  spec.add_development_dependency 'rake'
end
```

Change gemspec to add metada, remove test artefacts and dev dependencies
user
```ruby
require_relative "lib/benchmark/perf/version"

Gem::Specification.new do |spec|
  spec.name          = "benchmark-perf"
  spec.version       = Benchmark::Perf::VERSION
  spec.authors       = ["Piotr Murach"]
  spec.email         = ["piotr@piotrmurach.com"]
  spec.summary       = %q{Execution time and iteration performance benchmarking}
  spec.description   = %q{Execution time and iteration performance benchmarking}
  spec.homepage      = "https://github.com/piotrmurach/benchmark-perf"
  spec.license       = "MIT"
  spec.metadata = {
    "allowed_push_host" => "https://rubygems.org",
    "bug_tracker_uri"   => "https://github.com/piotrmurach/benchmark-perf/issues",
    "changelog_uri"     => "https://github.com/piotrmurach/benchmark-perf/blob/master/CHANGELOG.md",
    "documentation_uri" => "https://www.rubydoc.info/gems/benchmark-perf",
    "homepage_uri"      => spec.homepage,
    "source_code_uri"   => "https://github.com/piotrmurach/benchmark-perf"
  }
  spec.files         = Dir["lib/**/*", "README.md", "CHANGELOG.md", "LICENSE.txt"]
  spec.extra_rdoc_files = ["README.md", "CHANGELOG.md"]
  spec.require_paths = ["lib"]
  spec.required_ruby_version = ">= 2.0.0"
end
```
assistant