Monofur font added

Just patched this font with the powerline-fontpatcher, it's working on my macbook.

![](https://cloud.githubusercontent.com/assets/2100425/4581602/45b3b76a-4fe1-11e4-9b9d-47b59d686aa5.png)

![](http://i.imgur.com/0wGqx7c.png)