use a string for required_ruby_version

Jerry Cheung · Jerry Cheung · commit be86fe97601d · 2014-10-24T11:05:50.000-07:00
See http://guides.rubygems.org/specification-reference/#required_ruby_version
diff --git a/net-ldap.gemspec b/net-ldap.gemspec
@@ -27,7 +27,7 @@ the most recent LDAP RFCs (4510-4519, plutions of 4520-4532).}
   s.homepage = %q{http://github.com/ruby-ldap/ruby-net-ldap}
   s.rdoc_options = ["--main", "README.rdoc"]
   s.require_paths = ["lib"]
-  s.required_ruby_version = Gem::Requirement.new(">= 1.9.3")
+  s.required_ruby_version = ">= 1.9.3"
   s.summary = %q{Net::LDAP for Ruby (also called net-ldap) implements client access for the Lightweight Directory Access Protocol (LDAP), an IETF standard protocol for accessing distributed directory services}
 
   if s.respond_to? :specification_version then
