replaced double quotes with single quotes in server.js console log

Author: DaftMonk

Diff for: templates/express/server.js

@@ -30,5 +30,5 @@ else {
 app.get('/api/awesomeThings', api.awesomeThings);
 
 http.createServer(app).listen(app.get('port'), function () {
-  console.log("Express server listening on port %d in %s mode", app.get('port'), app.get('env'));
+  console.log('Express server listening on port %d in %s mode', app.get('port'), app.get('env'));
 });