Suggest adding the word debug to README

[nickdos]

In the previous version the debug option allowed the drawn coordinates to be displayed. I assumed it would be in v.2 but the README makes no mention of it at all. It wasn't until I laboriously read the entire page that I found the "Hints" section that explained how to do this. I suggest you add a line or extra text in that section: "(replaces the debug config option from v1.x)" or similar. That way a quick search for debug will find it for your existing users.

I also note that the new "press and hold" the play button has a problem on Chrome. It shows a browser alert but the text is not selectable and therefore there is no way to copy the text! So I have to read and retype the coordinates it shows.

[PiotrMachowski]

Thanks for the idea, I have added debug in documentation :)

Selection is also printed in browser's console, which is much easier to copy from (added info in documentation as well)

[nickdos]

Great, thanks for the quick response.