working LoaderGCode example;

A working example for LoaderGCode, which displays the toolpaths of a GCode file in 3D.  Corresponds to the pull request at https://github.com/MasDennis/Rajawali/pull/1061.

The example works but the orientation is not proper.  The cube is upside-down!  I've had a tough time getting the camera position proper - and rotation just doesn't work the way I want.  Maybe you know how to fix this or am I doing something wrong in the parser or renderer?


![device-2013-09-20-110756](https://f.cloud.github.com/assets/260223/1182290/890be684-2217-11e3-87cc-f91dcf568c85.png)
![device-2013-09-20-110931](https://f.cloud.github.com/assets/260223/1182291/89192592-2217-11e3-8c98-ee818c679553.png)