Add Netguru theme

Hey @lubieniebieski ,

I've added [Netguru Theme](https://github.com/netguru/netguru_theme) and applied some very basic layout changes. Stay tuned for more custom design!

![screenshot 2014-09-16 19 25 22](https://cloud.githubusercontent.com/assets/1094422/4291769/36de2fa8-3dc7-11e4-80ba-fa8609451489.png)
![screenshot 2014-09-16 19 28 01](https://cloud.githubusercontent.com/assets/1094422/4291775/3a8350b6-3dc7-11e4-9c4e-76ec7d7ccbfd.png)