dartsclone.gemspec in dartsclone-0.2.0 vs dartsclone.gemspec in dartsclone-0.2.1

@@ -12,9 +12,10 @@
   spec.license       = 'BSD-2-Clause'
 
   spec.metadata['homepage_uri'] = spec.homepage
   spec.metadata['source_code_uri'] = spec.homepage
   spec.metadata['changelog_uri'] = 'https://github.com/yoshoku/darts-clone.rb/blob/master/CHANGELOG.md'
+  spec.metadata['documentation_uri'] = 'https://github.com/yoshoku/darts-clone.rb#usage'
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
     `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }