Specular calculations for deferred lighting in progress

Have integrated the position of the directional light in the scene graph (imported from fbx) with the forward renderer and deferred lighting renderer's directional light angle

--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4048

KREngine/KREngine/Classes/KRDirectionalLight.h

@@ -19,6 +19,7 @@ public:
     virtual ~KRDirectionalLight();
     
     virtual std::string getElementName();
+    KRVector3 getLightDirection();
     
 #if TARGET_OS_IPHONE