Add plotter.vision (#58)

Add plotter.vision to vector creation tools for STL to SVG conversion.

README.md

@@ -144,6 +144,7 @@ Tools to create vector artwork from scratch or by conversion from other formats.
 - [Components AI](https://components.ai/) - Experimental computational design platform for exploring generative space.
 - [DrawingBotV3](https://github.com/SonarSonic/DrawingBotV3) - Cross-platform software for converting images to line drawings.
 - [linedraw](https://github.com/LingDong-/linedraw) - Python tool to convert images to sketchy vector line drawings.
+- [plotter.vision](https://plotter.vision/) - Interactive website for hidden line removal of STL files to generate plottable SVG. Also supports Red/Blue 3D glasses.
 
 ### Vector Utilities