Consistently use double-quotes

Author: Igor Kapkov

thor.gemspec

@@ -6,10 +6,10 @@ require "thor/version"
 Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 1.0"
   spec.authors = ["Yehuda Katz", "José Valim"]
-  spec.description = %q(Thor is a toolkit for building powerful command-line interfaces.)
+  spec.description = "Thor is a toolkit for building powerful command-line interfaces."
   spec.email = "[email protected]"
   spec.executables = %w[thor]
-  spec.files = %w[.document CHANGELOG.md LICENSE.md README.md thor.gemspec] + Dir['bin/*'] + Dir['lib/**/*.rb']
+  spec.files = %w[.document CHANGELOG.md LICENSE.md README.md thor.gemspec] + Dir["bin/*"] + Dir["lib/**/*.rb"]
   spec.homepage = "http://whatisthor.com/"
   spec.licenses = %w[MIT]
   spec.name = "thor"