Making initInterceptors() protected.
Reading Triangles Meshes from PLY files!
Adding jPly and commons-lang to .classpath
Fixing the Swing api

* Fixing the inverted Y axis bug when rendering a image.
* Adding Shaders to the Tracer.
Implementing the Multi Thread Tracer

* Using java.util.concurrent apis
* Customizable number of worker threads
* Limited tasks queue in order to avoid high memory usage