fix deprecated doctype 5


![screen shot 2013-12-28 at 10 58 01 am](https://f.cloud.github.com/assets/1137314/1818289/7044a536-6ff2-11e3-8ed3-dd5e3d6b8c26.png)

Fix deprecated `doctype 5`
http://cl.ly/image/1N3K3L0G3j0V