rubysl-cgi-session.gemspec in rubysl-cgi-session-2.0.0 vs rubysl-cgi-session.gemspec in rubysl-cgi-session-2.0.1

@@ -14,9 +14,12 @@
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
+  spec.required_ruby_version = "~> 2.0"
+
   spec.add_development_dependency "bundler", "~> 1.3"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "mspec", "~> 1.5"
+  spec.add_development_dependency "rubysl-prettyprint", "~> 2.0"
 end