How to install this Blender add-on (2.8+):
1. Locate your Blender add-on directory (%AppData%\Blender Foundation\Blender\VERSION\scripts\addons).
2. Create a directory called io_scene_wowobj
3. Place both __init__.py and import_wowobj.py into that folder (found in this folder).
4. If you are UPDATING the add-on, make sure to delete the __pycache__ directory found inside io_scene_wowobj.
5. Restart Blender.