I renamed the tutorial on creating HTML elements, and added a small tutorial on adding/embedding HTML elements
- /book/features/adding_basic_HTML_elements.md
- /book/features/creating_basic_HTML_elements.md
- /book/features/adding_HTML_elements.md
- /book/_toc.yml
- /book/_static/element_render_box.html
- /book/_static/bimodal_field.mtl
- /book/_static/bimodal_field.obj