Adding path to repo

You can use it with express like following :
```
const path = require('path');
const express = require('express');
const app = express();
const Server = require('node-git-server');

const repos = new Server(path.resolve(__dirname, 'tmp'), {
autoCreate: true
});
const port = process.env.PORT || 7005;

app.use('/git', function(req, res) {
repos.handle(req, res)
});

app.listen(7005, () => {
console.log(`Express http server listening`);
});
```
Is this what you want ?

_Originally posted by @esp10mm in https://github.com/gabrielcsapo/node-git-server/issues/58#issuecomment-522491841_

I am getting errors like :
const u = url_1.default.parse(req?.url || '');
^

SyntaxError: Unexpected token '.'

Start with the Express usage example in the issue and the reported `url_1.default.parse(req?.url || '')` error. Trace the relevant entry point and verify the supported Node.js runtime; done means the documented Express setup runs without the reported syntax error.

Written by the indexing model from the issue text.