Completed implementation of skyboxes, enabled by setting the "skybox" attribute of the "scene" node. Once the camera is moved to the scene graph, this "skybox" attribute will be moved to the "camera" nodes.

--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%40125

KREngine/KREngine/Classes/KRNode.cpp

@@ -15,7 +15,6 @@
 #import "KRSpotLight.h"
 #import "KRDirectionalLight.h"
 #import "KRInstance.h"
-#import "KRSkyBox.h"
 #import "KRAABB.h"
 
 
@@ -143,8 +142,6 @@ KRNode *KRNode::LoadXML(KRScene &scene, tinyxml2::XMLElement *e) {
             lod_min_coverage = 0.0f; //1.0f / 1024.0f / 768.0f; // FINDME - HACK - Need to dynamically select the absolute minimum based on the render buffer size
         }
         new_node = new KRInstance(scene, szName, szName, e->Attribute("light_map"), lod_min_coverage);
-    } else if(strcmp(szElementName, "sky_box") == 0) {
-        new_node = new KRSkyBox(scene, szName);
     }
     
     if(new_node) {