Make DPI to 320 (HDPI)

![screenshot_2014-02-02-06-34-23](https://f.cloud.github.com/assets/5674972/2059157/d067be36-8b99-11e3-8b6c-50ede0512cf5.png)
![screenshot_2014-02-02-06-34-28](https://f.cloud.github.com/assets/5674972/2059158/d0a7aeba-8b99-11e3-8e5e-6a8ce73c24cd.png)
![screenshot_2014-02-02-06-34-32](https://f.cloud.github.com/assets/5674972/2059159/d0e81072-8b99-11e3-9959-171cbf5c51cb.png)
![screenshot_2014-02-02-06-34-17](https://f.cloud.github.com/assets/5674972/2059160/d12647ca-8b99-11e3-9411-c8b192f9c545.png)