for rails/rails#23431

       modified:   guides/source/asset_pipeline.md
* description of asset combination from apps and gems, e.g. jquery-rails
* after @vipulnsward's related change rails/rails#23479
  correction: --skip-sprockets will prevent all of these gems, not just sass-rails and uglifier

       modified:   guides/source/working_with_javascript_in_rails.md
* noted that rails.js requires the asset pipeline

[ci skip]

- Changed "paintIt" to "@paintIt" so that it can be called in an on
  click handler.
- Closes #22568

wrapper div has been removed in cbb91745

 - The example for which this NOTE was written was removed in
   https://github.com/rails/rails/pull/20493.

The removed section promotes putting JS code directly inside the controller, this is not in line with convention.

- Changed `IN` to `ON` in all note sentences in guides.

References #18148.

Replace bind() with on() as suggested by the JQuery bind() documentation: https://api.jquery.com/bind/

* Add form_tag generated output.
* improve some text.
* data-remote='true' should use double quotes.

`a[data-color]` is not used in example html.

We have three or four different introduction sentences to the guides.
After this commit, we use the same one everywhere.

Talked with @fxn about this. Bullet points should have periods at the ends.

We discussed this on Twitter, seems to be the best option.