Merge branch 'KHR_materials_variants' of github.com:MiiBond/Babylon.js into KHR_materials_variants

loaders/src/glTF/2.0/Extensions/KHR_materials_variants.ts

@@ -29,7 +29,8 @@ interface VariantMapping {
 }
 
 /**
- * [Specification](https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_variants)
+ * [Proposed Specification](https://github.com/KhronosGroup/glTF/pull/1681)
+ * !!! Experimental Extension Subject to Changes !!!
  */
 export class KHR_materials_variants implements IGLTFLoaderExtension {
     /**
@@ -134,4 +135,4 @@ export class KHR_materials_variants implements IGLTFLoaderExtension {
     }
 }
 
-GLTFLoader.RegisterExtension(NAME, (loader) => new KHR_materials_variants(loader));
+GLTFLoader.RegisterExtension(NAME, (loader) => new KHR_materials_variants(loader));