blockquote styling

We can now include blockquotes from markdown as follows:

```
This is  text.

> This is a blockquote

More text.


> This is an attributed blockquote
>
> &mdash; John Doe
```

![oh my apis adi](https://f.cloud.github.com/assets/2433509/2090938/e827966e-8e9a-11e3-8bb6-6d1fd8e8d5a9.png)

closes #246