Documentation changes.

include/PolyVox/Vertex.h

@@ -34,6 +34,11 @@
 
 namespace PolyVox
 {
+	/**
+	 * Represents a vertex in a mesh and includes position and normal information.
+	 * There is also a 'data' member, which usually stores the (possibly interpolated)
+	 * value of the voxel(s) which caused the vertex to be generated.
+	 */
 	template<typename _DataType>
 	struct  Vertex
 	{