Review "how to outfit a sim with interactive descriptions" document

[zepumph]

From phetsims/tasks#980, @ariel-phet and the team discussed that there is a fair bit of knowledge not written down about how we go about adding accessible features to a simulation, and to common code components.

We already have https://github.com/phetsims/a11y-research/blob/master/doc/how-to-make-a-sim-accessible.md, which is much more in depth than I thought it was, but it could be added to further.

@jessegreenberg I'm going to co-assign with you, for whoever gets to this first. The goal is eventually to go over this at developer meeting to bring everyone, at least a little, up to speed on what it looks like to add accessibility to a sim/component.

[jessegreenberg]

That sounds like a great idea. Was there a time frame mentioned for this on the heels of phetsims/tasks#980?

[zepumph]

The time frame was that PhET-iO should be first. Not sure any more specifics. Perhaps we can discuss this more next a11y dev meeting.

[zepumph]

Today I took a first pass at this. I also moved it over to phet-info, that felt better. Still todo:

• @jessegreenberg make a pass
• Add an outline at the top
• Probably something else.

@jessegreenberg please read with the following questions in your mind:

• Is the scope of this document correct
• Where could we add more, useful examples
• Does it flow as expected?
• Are there any large pieces that I'm missing?
• Will you please tear it apart and edit whatever you would like?
• UPDATE: should we combine the "a11y design patterns" doc into this one?

Thanks! Let me know if you have any questions.

[zepumph]

We need to update this to use the term "Interactive Descriptions"