Update logo with pulitzer tagline

Championes

![screen shot 2014-10-28 at 15 10 07](https://cloud.githubusercontent.com/assets/1607666/4810605/86998322-5eb4-11e4-89cf-e5949ad563ca.png)
could also add it as [svg text](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/text) if you wanted to keep in the file but without adding a new set of paths