README examples has wrong listening port numbers

Created by: Subomi

In section Setup a stand-alone proxy server with custom server logic: We have: `var server = http.createServer(function(req, res) { // You can define here your custom logic to handle the request // and then proxy the request. proxy.web(req, res, { target: 'http://127.0.0.1:5060' }); });

console.log("listening on port 5050") server.listen(5050);`

Instead of: `var server = http.createServer(function(req, res) { // You can define here your custom logic to handle the request // and then proxy the request. proxy.web(req, res, { target: 'http://127.0.0.1:5050' }); });

console.log("listening on port 5050") server.listen(5050)'

And also the same thing in section Setup a stand-alone proxy server with proxy request header re-writing