[CS2] Literate CoffeeScript fails on simple example

Example:
```coffeescript
This is code that outputs 3

	x = 3
	console.log x

Wow that was easy!
```

Expected:
```js
(function() {
  var x;

  x = 3;

  console.log(x);

}).call(this);
```
Instead:
```js
(function() {


}).call(this);
```

I dug in a little bit and it looks like the "marked" library considers the pieces of code as paragraphs.