Fix pagination rendering for Bootstrap

Hi,

I'm happen to be using the last bootstrap and it seems the syntax changed for pagination. Now instead of
```html
<ul class='pagination'>
...
</ul>
```
is
```html
<div class='pagination'>
  <ul>
    ...
```

So I forked it and made the change. Any comments? I haven't had chance to actually review bootstrap's changelog to document when the change became to stable, so it's probably better to check that before actually merging this pull request.

Kind regards.