Add a screenshot of .qb file thumbnails for blog.

Update README.md

Add notes about support for Voxlap .vox and Qubicle .qbcl thumbnails.

Crop image to look better in release notes.

Update README.md

Update to new Setup information

Update README.md

Update examples and TODO now ambient occlusion support has been added to images.

Initial commit of MagicaVoxel thumbnail handler for Windows Explorer

Library to read MagicaVoxel .vox files.
Library to render Voxel files to a bitmap or SVG using SkiaSharp.
WIX installer to install and register the Windows Explorer Shell Extension for displaying thumbnails.