Feature/request mirror

fixes #126 

I tried this:

```javascript
meteor.stdout.pipe(process.stdout);
meteor.stderr.pipe(process.stderr);
```

And every time Meteor is restarted it shows the exception below, which is otherwise swallowed with the previous code:
```
Error: ENOENT, open '../web.browser/head.html
```

I've not included it yet as I'd like to figure out why the exception is happening in the first place.