joemccann/dillinger — pull request #155 by crohr (2014-04-16 09:26:48+00:00)
Title: Do not allow express 4, as dillinger is not compatible.

Otherwise you would get the following error when trying to launch the app:

```bash
app.configure(function(){
^
TypeError: Object function (req, res, next) {
app.handle(req, res, next);
} has no method 'configure'
at Object. (/Users/crohr/dev/dillinger/app.js:15:5)
```