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)

Please use || for logical or (and && for logical and)

You could probably get rid of this condition entirely....
```
if (yaw >= 45 && yaw < 135) {
...
} else if (yaw >= 135 && yaw < 225) {
...
} else if (yaw >= 225 && yaw < 315 {
...
} else {
    /* yaw is >= 315 or < 45 */
}
````