There are two methods of installing and enabling the glTF 2.0 Blender exporter. In either case, you must first download the exporter and unzip it.
After extracting the ZIP, copy scripts/addons/io_scene_gltf2 to the scripts/addons folder of your Blender installation.
Next, enable the exporter.
After downloading the exporter, open the User Preferences... dialog in Blender:
Go to the File tab and set the Scripts directory to the scripts folder from the downloaded ZIP:
An advantage of this option is that changes to the exporter are automatically visible applied in Blender. However, the Scripts folder is no longer available for other extensions.
After installing, you must enable the exporter.
You must also enable the glTF 2.0 exporter under the Add-ons tab. If you have another glTF 2.0 exporter installed, only one may be enabled at a time.
