load default tls certs

lib/sni-server.js

@@ -25,6 +25,9 @@ module.exports.create = function (certPaths, serverCallback) {
     , honorCipherOrder: true
     };
 
+    secureContexts['www.example.com'] = require('tls').createSecureContext(secureOpts);
+    secureContexts['example.com'] = secureContexts['www.example.com'];
+
     //SNICallback is passed the domain name, see NodeJS docs on TLS
     secureOpts.SNICallback = function (domainname, cb) {
       // NOTE: '*.proxyable.*' domains will be truncated