Exclude unnecessary files from the package

Author: nobu

optparse.gemspec

@@ -23,7 +23,9 @@ Gem::Specification.new do |spec|
   spec.metadata["source_code_uri"] = spec.homepage
 
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{\A(?:test|spec|features)/}) }
+    `git ls-files -z`.split("\x0").reject { |f|
+      f.match(%r{\A(?:(?:test|spec|features)/|Gemfile|\.(?:editor|git))})
+    }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{\Aexe/}) { |f| File.basename(f) }