message: Updated Media section
diff: @@ -78,6 +78,7 @@ Quickly and easily create PowerPoint presentations with a few simple JavaScript
  - [Image Sizing](#image-sizing)
  - [Adding Media (Audio/Video/YouTube)](#adding-media-audiovideoyoutube)
  - [Supported Formats](#supported-formats)
  + - [Video Notes](#video-notes)
  - [Data Options](#data-options)
  - [Media Options](#media-options)
  - [Media Examples](#media-examples)
  @@ -1077,26 +1078,31 @@ Syntax:
  slide.addMedia({OPTIONS});
  ```
  -**IMPORTANT NOTES**
  +**IMPORTANT NOTE:**
  Adding media is predominately a Node.js feature. Why? Because no web browser can encode media files
  -into base64, which is the format needed to create the file in the PPTX export.
  +into base64, which is the format needed to create the PPTX export file.
  -Support for [Adding Images](#adding-images) can be accomplished in browsers because a canvas element can be created,
  -filled using an image path, and then converted to base64 using a built-in canvas method. No such methods
  -exist for media, hence, the inability to support this functionality outside of Node.
  +Support for [Adding Images](#adding-images) can be accomplished in browsers because a shadow canvas element
  +is created, filled using an image path, and then converted to base64 using a built-in canvas method. No
  +such methods exist for media, hence, the inability to support this functionality outside of Node.
  You can try to pre-encode media into base64 and pass it using the `data` option, but it is a
  hit-or-miss situation based upon recent feedback.
  ### Supported Formats
  -Both Video (mpg, mov, mp4, m4v, etc.) and Audio (mp3, wav, etc.) files are supported (Microsoft Office [supported formats](https://support.office.com/en-us/article/Video-and-audio-file-formats-supported-in-PowerPoint-d8b12450-26db-4c7b-a5c1-593d3418fb59#OperatingSystem=Windows))
  +* Video (mpg, mov, mp4, m4v, etc.)
  +* Audio (mp3, wav, etc.)
  +* View Microsoft Office [supported formats](https://support.office.com/en-us/article/Video-and-audio-file-formats-supported-in-PowerPoint-d8b12450-26db-4c7b-a5c1-593d3418fb59#OperatingSystem=Windows))
  +
  +### Video Notes
  +* Online video linked to in the presentation (YouTube, etc.) is supported in both client browser and in Node.js
  +* Not all platforms support all formats! MacOS can show MPG files whereas Windows probably will not, and some AVI
  +files may work and some may not. Video codecs are weird and painful like that.
  ### Data Options
  * Node.js: use either `data` or `path` options (Node can encode any media into base64)
  * Browsers: pre-encode the media and add it using the `data` option (this may not always work for various reasons)
  -Online video (YouTube embeds, etc.) is supported in both client browser and in Node.js
  -
  ### Media Options
  | Option | Type | Unit | Default | Description | Possible Values |
  | :----------- | :------ | :----- | :-------- | :------------------ | :--------------- |
  