Added player direction to debug info screen

Screenshot of new debug screen:
![screenshot - 12262014 - 09 11 34 am](https://cloud.githubusercontent.com/assets/8166212/5557890/40ea706c-8cdf-11e4-8bf5-600cc0f1444f.png)

```
<< ", yaw=" << yaw
```
... since it's already been wrapped 0 to 360 above