Use accessor for inverse-bind matrices

[pjcozzi]

Inverse-bind matrices for a skin currently look like:

        "Controller-mesh019": {
            "bindShapeMatrix": [
                // ...
            ],
            "inverseBindMatrices": {
                "bufferView": "bufferView_465",
                "byteOffset": 0,
                "count": 19,
                "type": 35676
            },
            "joints": [
                // ...
            ]
        }

Shouldn't we make inverseBindMatrices just reference an accessor, e.g.,

    "accessors": {
        "accessor_10": {
            "bufferView": "bufferView_465",
            "byteOffset": 0,
            "count": 19,
            "type": 35676
        },

[fabrobinet]

yes - good catch

[pjcozzi]

I will write the schema using accessors then. Can this make dev-6 to keep everything in sync?

[pjcozzi]

The schema and converter are updated and in-sync.