check README

[mithru]

@Rushali can you check this as you set up the project on your machine. There were a few things I noticed that were old.

[Rushali]

@mithru besides the fact that it works on mac OS, i could set it up. However, the post about using p5 with screen reader could do with an update about how to turn on voiceover. I could not get the web editor's accessibility options working.
Something to consider is "as a first time visual user, I did not know what to expect" so having an example that audio file in the readme might help but thats just me. Hope this was helpful