Version 1.1

fix(CurvedLineRenderer): changed to allow nested curved lines.

feat(Editor): added a new script for Editor menus (`CurvedLineMenu`).

feat(materials): added new materials for the example scene.

feat(example): updated the example scene.

doc(script): added more documentation to the source code.

doc(README): added documentation about new features and updated images.

docs(CONTRIBUTING): updated CONTRIBUTING.md

Little corrections and minor changes.