Made the criterion of GLTFLoader camera direction same as glTF 2.0 / Blender.
Made the criterion of GLTFLoader camera direction same as glTF 2.0 / Blender.

emadurandal/GLBoost,emadurandal/GLBoost,cx20/GLBoost,emadurandal/GLBoost,cx20/GLBoost,cx20/GLBoost