"``` vim" is correct as "```vim"

Now:

    ``` js
      var bad = true
    ```
    
    Some text.

... result: 

![Screen Shot 2013-04-06 at 1 28 59 PM](https://f.cloud.github.com/assets/52201/346960/4ef0afb0-9e83-11e2-8b48-151d8c51da45.png)