chore(docs): document sharing slides (#134)

* chore(docs): remove deprecated "last animation" mention

* chore(docs): document sharing slides

docs/source/reference/index.md

@@ -8,6 +8,7 @@ Automatically generated reference for Manim Slides.
 api
 cli
 examples
+sharing
 ```
 
 [Application Programming Interface](./api): list of classes and methods that may be useful to the end-user.
@@ -15,3 +16,5 @@ examples
 [Command Line Interface](./cli): list of all commands available using Manim Slides' executable.
 
 [Examples](./examples): curated list of examples and their output.
+
+[Sharing](./sharing): how to share your presentation with others.

docs/source/reference/sharing.md

@@ -0,0 +1,126 @@
+# Sharing your slides
+
+Maybe one of the most important features is the ability to share your
+presentation with other people, or even with yourself but on another computer!
+
+There exists a variety of solutions, and all of them are exposed here.
+
+We will go from the *most restrictive* method, to the least restrictive one.
+If you need to present on a computer without prior knowledge on what will be
+installed on it, please directly refer to the last sections.
+
+> **NOTES:** in the next sections, we will assume your animations are described
+in `example.py`, and you have one presentation called `BasicExample`.
+
+## With Manim Slides installed on the target machine
+
+If Manim Slides, Manim (or ManimGL), and their dependencies are installed, then
+using `manim-slides present` allows for the best presentations, with the most
+options available.
+
+### Sharing your Python file(s)
+
+The lightest way to share your presentation is with the Python files that
+describe the slides.
+
+If you have such files, you can recompile the animations locally, and use
+`manim-slides present` for your presentation. You may want to copy / paste
+you own `.manim-slides.json` config file, but it is **not recommended** if
+you are sharing from one platform (e.g., Linux) to another (e.g., Windows) as
+the key bindings might not be the same.
+
+Example:
+
+```bash
+# If you use ManimGl, replace `manim` with `manimgl`
+manim example.py BasicExample
+
+# This or `manim-slides BasicExample` works since
+# `present` is implied by default
+manim-slides present BasicExample
+```
+
+### Sharing your animations files
+
+If you do not want to recompile all the animations, you can simply share the
+slides folder (defaults to `./slides`). Then, Manim Slides will be able to read
+the animations from this folder and its subdirectories.
+
+Example:
+
+```bash
+# Make sure that the slides directory is in the current
+# working directory, or specify with `--folder <FOLDER>`
+manim-slides present BasicExample
+```
+
+and the corresponding tree:
+
+```
+.
+└── slides
+    ├── BasicExample.json
+    └── files
+        └── BasicExample (files not shown)
+```
+
+## Without Manim Slides installed on the target machine
+
+An alternative to `manim-slides present` is `manim-slides convert`.
+Currently, only HTML conversion is available, but do not hesitate to propose
+other formats by creating a
+[Feature Request](https://github.com/jeertmans/manim-slides/issues/new/choose),
+or directly proposing a
+[Pull Request](https://github.com/jeertmans/manim-slides/compare).
+
+A major advantage of HTML files is that they can be opened cross-platform,
+granted one has a modern web browser (which is pretty standard).
+
+### Sharing HTML and animation files
+
+First, you need to create the HTML file and its assets directory.
+
+Example:
+
+```bash
+manim-slides convert BasicExample basic_example.html
+```
+
+Then, you need to copy the HTML files and its assets directory to target location,
+while keeping the relative path between the HTML and the assets the same. The
+easiest solution is to compress both the file and the directory into one ZIP,
+and to extract it to the desired location.
+
+By default, the assets directory will be named after the main HTML file, using `{basename}_assets`.
+
+Example:
+
+```
+.
+├── basic_example_assets
+│   ├── 1413466013_2261824125_223132457.mp4
+│   ├── 1672018281_2145352439_3942561600.mp4
+│   └── 1672018281_3136302242_2191168284.mp4
+└── basic_example.html
+```
+
+Then, you can simply open the HTML file with any web browser application.
+
+### Sharing ONE HTML file
+
+A future feature, that will be available once
+[#122](https://github.com/jeertmans/manim-slides/issues/122) is solved, will be
+to include all animations as data URI encoded, within the HTML file itself.
+
+### Over the internet
+
+Finally, HTML conversion makes it convenient to play your presentation on a
+remote server.
+
+This is how your are able to watch all the examples on this website. If you want
+to know how to share your slide with GitHub pages, see the
+[workflow file](https://github.com/jeertmans/manim-slides/blob/main/.github/workflows/pages.yml).
+
+> **WARNING:** keep in minde that playing large video files over the internet
+can take some time, and *glitches* may occur between slide transitions for this
+reason.