Release 0.6 fixes race condition with Octrees

Release 0.6 fixes race condition with Octrees

Latest Version 0.6 is online at GitHub.
We fixed a race condition that occured, when visualizing more than one Octree with the visualizer. That also fixes the flickering that could occur when rendering Octrees.
Stuff gets more and more stable, as we approach Version 1.0 ((:
Also my implementation of an URDF parser that will allow you to load ROS compatible kinematics makes progress. I hope to include it in the upcoming release!

Best,
Andreas

V 0.6 (2015-04-24):
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- Fixed crahses of octree_provider command line interface resulting from race-conditions.
- Fixed flickering in Visualizer when drawing more then one Octree. Resulted from same race-conditions as above.
- Corrected axis order in visualizer console output.
- Fixed model loading path when not using GPU_VOXELS_MODEL_PATH
- Changed argument handling in command line interface for loading models from PCD only to more general pointcloud files.