Made padding clear

extensions/MultiVendor/EXT_binary_glTF/README.md

@@ -89,7 +89,7 @@ An advantage of Binary glTF over glTF is that resources can be embedded without
 
 The binary `body` is the binary payload for geometry, animation key frames, skins, images, and shaders.
 
-The start of `body` is 4-byte aligned to ease its use with JavaScript Typed Arrays.
+The start of `body` is 4-byte aligned to ease its use with JavaScript Typed Arrays.  This implies that trailing spaces may be added to the JSON in the `scene` part such that `(20 + sceneLength)` is divisible by `4`.
 
 The buffer with id equal to `"binary_glTF"` is used to address the content of the binary `body`.
 An offset of zero addresses the first byte of the binary `body`.